[Nexus 5X Q&A, Help & Troubleshooting] robstunner:
ok so im just cross posting, but here was my decision written down and shared.

Build: The 5x build is plastic, the 6p.. metal. This word "premium" is probably the most subjective word in this entire decision process between the two. While the metal 6p surely feels fancier and more expensive, I cant help but feel more worried about dropping it. Metal bends, dents and scuffs and you really need to keep in mind that 2 out of 10 repairability rating if you haven't gotten that nexus protect package. The Nexus 5x will admittedly feel “cheaper”, however it feels like it will take a drop or two without being disfigured or broken. Great in hand feel, good matte finish and that bottom headphone jack to boot ( I don't know why I like it so much more there, but it deserves a mention). I don't use ambient display, as I prefer the the more noticeable LED notification. It also deserves mentioning that the 5x’s LED is brighter and i’d like to even say bigger / more noticeable. The 5x scores higher on the ifixit repairability score as well, although I cant remember the exact number. The 6p is certainly a 2 hand phone, and although in pictures and specifications its close to the Moto X Pure edition, I have to say without a doubt that tiny little number makes a noticeable difference in your hands. the width is just a tiny bit bigger, but the height is a decent amount. That being said, I can immediately tell the size difference from the Moto X Pure. I’ve heard some people claim that the thinness of the 6p makes it better in the hand but thats not the case for me (compared to the Moto X Pure with the same size screen). The 6p is the size of a iPhone 6+, while the 5x is the same size as the Xperia Z3. Im 6ft 1” tall and while I can use the 6p, its unwieldy in many situations. Sure I might be able to get used to it but it’s obviousness in my pocket and it’s inability to even fit in my car’s cup holder will never get used to it. I’ve owned a few larger phones (nexus 6 / note 4) but Ive never kept them for more than two weeks. Both got returned before I went past the 14 day return limit. I like having a phone that is there when I want it, and unnoticeable when I don't. For me, the nexus 5x fits great in the hand, feels great in the hand (in reference to that matte, soft, warm finish), and I can do whatever I am doing without the constant reminder that “hey, I'm a big phone and I'm in your pocket.” If you don't like being worried about dropping the phone constantly, i would suggest the 5x.

Camera: Both have the same camera, however the 6p has a fancier slow-mo video, and a burst mode. I will say that the last video i’ve ever taken was on a iPhone 5s (ya that old) and it was of a pig race at a farm during halloween weekend. I didn't care about clarity, image stabilization or lens flare. It was just a video for the sake of capturing something in motion. Suffice to say while I admit the 240 slow mo is cool, I'm not sure i’ll ever use it. As far as burst mode, its easily done with a 3rd party camera app. Its not a big deal to me but it could be to you. Otherwise, you got the same exact thing. Oh, and EIS. Im not sure if thats enabled in photos or not, but i haven't seen a difference in pictures between the two, both are great! Front facing camera is better on the 6p. If your into that thing, hooray for you. I don’t take selfies and I'm completely against them in general so thats all i’ll say about that.

Screen: Another very subjective thing. I’m finding I like the LCD more and thats the first time I'm ever saying that. Its brighter, with true-er whites and its smaller. I cannot see the difference between the 1080p and 1440p on the two devices. Well, at least when looking at the screen from a normal not-a-tech-nerd distance. The bigger difference is size, which goes back to the build. Do you want a large phone, or not? I wouldn't look at the screen for a choice for anything other than size. AMOLED has its pluses and minuses, as do LCD’s. I don't think either of the specifications are large enough to determine a choice. Don't get into a spec fight about ppi because its not a large enough difference in real world use. I have noticed that in very dark settings, the AMOLED display gets pinkish, which the 5x does not. With that pink hue, you get a dark image, and inky blacks thanks to how AMOLED works. In the day light the 5x will be better, while in the dark, AMOLED wins (except for that pink hue).

Battery: Having them both set up in the exact same way over the week, I can easily say that they are damn near equal. Maybe, just maybe, the 6p has a slight edge. 4-5hrs SOT should be expected between both within a day. Thats with google now on, with location history enabled and high accuracy location polling. Sure, you can go on XDA and see 7+ hours screen on times, but I will tell you even with google now off, location polling off and history off, i wouldn't even hit 5.5hrs. Those numbers are indicative of people who go in airplane mode with zero brightness, and other ridiculous ways to get extremely high SOT’s to impress people on the internet. The 2700mah battery in the 5x is small, but the 1080p screen makes up for it where the snapdragon 810 and a larger qhd screen eat up the battery a little more in the 6p. I really don't think the battery should be a deciding factor either, as for me they are both too close in endurance (and the phone arena tests support that).

Internals: Again, both are the same dang thing for normal users. I haven't done anything with my 6p that my 5x had obvious struggles with. Theres nothing that the 808 caps out at, that the 810 doesn't thermal throttle down at in comparison (at least, again, in my experience). Ive seen comparison videos where the 6p is half a second faster here and there, or games load a little faster but I'm ok with that. Its a non-issue in daily use. I use my phone for texts, pictures, social media and a little youtube with maybe 15 minutes a day of boom beach. I don't play any high intensity games where my processor might be taxed to the max, so for me, its another draw.

Minutiae: Ok so I stole that word from +Michael Fisher 's review. Its a great way to end the comparison. The front facing speakers in the 6p absolutely blow away the 5x. There is no other way around it, if you listen to music or watch movies on your phone through your external speakers you will not be impressed with the 5x. The 6p speakers are louder, fuller, and there is two of them. At times, I would actually have to turn down the 6p speakers as they were too loud. The only time I turn down the 5x speakers is when they are just too distorted and tinny to enjoy. I personally prefer the 6p speakers, but with great headphones and 3 bluetooth speakers in the house, Ill just adjust to using those more frequently. the 5x speakers are definitely usable, but I wouldn't use them for much more than just video commentary or when I go raid a base in boom beach. I again prefer the headphone jack in the bottom, which may not be the same for you. Both my devices are 32gb and I figured that deserves a mention as the 5x tops out at that capacity while the 6p goes up to 128. I don't need any more than that so storage is another wash (for me).

I have been back and forth for a little while now between the two as some of you obviously know. However I've decided that my 5x with a +dbrand skin will be my daily, while the 6p with the official felt case will be going back. Im comfortable using the 5x without a case while the 6p almost demands it, especially while at work. Thanks for reading my opinion and please let me know if you agree or not.﻿