[LG Optimus G Pro] russilker:
Never owned the HTC One, but did quite a bit of research into it before I ended up going with the G Pro. I'll admit that having owned the original Note is what drew me to the G Pro, but there are other reasons I believe it is a superior phone.

From the moment I bought it, I've loved every aspect of it, from its size, to build quality, to performance, to stock Rom, to features, etc. The QRemote app is awesome, the LED-laced home button is even more awesome, the camera takes excellent pictures and video, the "plastic" construction feels like a whole new type of material after coming from Samsung devices; it feels very secure (as long as you don't need to constantly remove the back cover). Battery life is great too.

A few things you have to get used to though:

"Temperature" issues. It doesn't get hot, per say, but it has a built-in safeguard that turns the screen brightness down during any kind of resource-intensive activity, like GPS usage, game playing, or video watching, and good luck turning the brightness way up while doing that (there are ways of disabling this safeguard, but I personally trust the engineers that there is a reason it is implemented and I won't mess with it).

Battery life, while generally great, is susceptible to quick drainage. Namely, GPS usage drains it scarily fast, but that may just be an aspect of all android phones. However, since the battery normally lasts so long on the G Pro, the quick drain from a quick car ride using navigation is all the more noticeable.

Android development for the G Pro isn't anywhere close to where the One is at. THAT BEING SAID, as of a few hours ago, an unofficial port of CM 10.1 was ported to our device, and I expect once all the bugs are worked out it will give a nice jump-start to the development of other Roms. Additionally, the stock Rom is excellent to begin with, and by far the smoothest and most fully-featured stock Rom I've ever used on any Android phone. Period.

The screen is very sensitive. Again, I don't own the One so I can't comment on how it compares, but the one thing that bothers me the most about my phone is that whenever it is in my pocket and I get a notification of some sort, the screen turns on, and somehow the slight movement of the phone in my pocket causes it to call 911, text all my friends, change the brightness, enable NFC, open the calculator, etc. etc. It's so bad that I'm forced to have a pattern-unlock on it, not because I want the security, but because I don't want my phone unlocking by itself and wreaking havoc in my pocket. Even with that enabled, however, there's still the "Emergency call" button I can't get rid of on the lockscreen, so it still occasionally dials out to the police from my pants.

Keep in mind, I really had to reach a little to come up with all of the above "drawbacks". It is my favorite phone I've ever seen or used or owned, and were it not for its maddening sound quality issues over bluetooth with my car system (more than likely related to Android 4.1.2 and not the phone itself, as I can't find anybody else having my issues with the G Pro specifically), I would probably not feel the need to even mess with the stock Rom on it. In fact, the bluetooth thing caused me to reconsider the One, but once you get used to the slightly larger frame of the G Pro (the bezels are very thin, so the frame is relatively thin and light for the ginormous screen you're getting), you really don't want to go back to anything smaller.

Hopefully I didn't confuse you more.. the G Pro is the right way to go. No phone is perfect, the One is an impressive looking device, but as of right now, the G Pro is as close to perfection as it's gonna get.