[Xperia Z3 Q&A, Help & Troubleshooting] trancelated:
hey TIA,

I was under the same dilemma until a couple of days ago. My post might seem to look like a cliche or would have the same content which you must have read elsewhere, but bear with me on this.

I wanted to get the Nexus 6, couldn't as Google's being a **** by delaying its release. Then I shifted my attention towards Moto X which was almost identical to Nexus 6 (except for screen and camera). There was a flash sale on 29th / 30th October on Motorola UK site. I didn't buy any (still couldn't decide). However, after the sale, the price boosted back up and it was a bit too steep for me. For the same price range I could get a LG G3 or Sony Xperia Z3. I spent countless hours (2 days) to outweigh the features and decide.

The LG G3 has amazing 5.5" large IPS screen with a resolution of 2560 x 1440 (which is 2K; also called as QHD), a 13MP back camera with 3 axis image stabilization and an Infra-red Laser rangefinder (which would make LG's camera a beast in terms of focusing, perceiving depth and smooth motion recording) and a 2.1MP front camera capable of recoding and shooting 4K pictures. It comes with 2 GB RAM and a Quadcore 2.5GHz Krait CPU all powered by a 3000 mAh battery. Apart from that the G3 has regular flagship standard features like 16 GB ROM, 128 GB microSD card support, FM, LTE+, NFC, IR, WiFi, BT, GPS & GLONASS.

The Sony Xperia Z3, comes with a comparably smaller 5.2" screen with a resolution of 1080 x 1920 (which is 1080p HD), and a whopping 20.7MP camera which is being considered as one of the best for now. The camera is capable of recording 4K images and videos. On the flip side, it has a 2.2MP camera. It also comes with 3GB RAM and a Quadcore 2.5GHz Krait CPU same as LG G3. However, its being powered by a 3100 mAh battery. The Z3 also has standard flagship features like 16 GB ROM, 128 GB microSD card support, LTE, FM, NFC, WiFi, BT, GPS, Beido. It also supports Quick Charge 2.0 for faster charging.

Finally, the Moto X has a similarly sized screen to that of Xperia Z3, a 5.2" screen from Samsung's AMOLED line with a resolution of 1080 x 1920 (which is 1080p HD) . It sports a 13 MP back camera which takes pictures at 4128 x 3096 ( a bit higher than 4K) and 2MP front camera. The Moto X does not have a microSD card slot nor a FM. It runs on 2GB RAM and same CPU as mentioned above.

These features were too tempting, but spending £450 on a phone which I may replace in a year or so wasnt' ideal for me. so, after working out the pricing, I decided to go for a contract with 3. 3 offers 24 month contract with 600 minutes, unltd texts an 1GB internet (which is enough for me) for £28 a month. so £28 * 24 = £672 and I get a free phone!; If I decided to get a phone on its own and use one off contract, then it would cost me £15 a month * 24 months = £360 + £450 (phone) = £810.

So I went with Xperia Z3 just because of its camera picture quality, 3GB RAM, and Playstation Integration and I went with 3 just because it saves me ~£100 which I can use it for something else.

If you want "Google"-ness on your phone, then go with Moto X, If you want a phone with huge RAM and awesome camera, go with Xperia Z3, if you want a phone to take great 4K videos then go with G3.

There is, how ever a 4th alternative, OnePlus's One. You can get it for ~£200 +/- £50 off Amazon. which is a blend of all three phones (without 4K display) I've heard its a good phone. If you are on a tight budget I would suggest you to get this NOT FROM AMAZON, but from official site.