[Device Reviews and Information] Rizera:
After almost two months of waiting, I finally received my Be Touch 2! My opinions on it:

Build: Hugely inspired by the iPhone 6 Plus (they are almost the same size and form factor), the phone looks and feels very good in the hand. A little too big for my taste, and the black bezel below the screen is a little of a heartbreak. Still, the phone looks very good and solid.

Screen: It is an OK Full HD screen. Color calibration looks fine to me, however the brightness could be much better. Both the lowest is not too dim, and the highest is not too bright. But overall, the screen is fine. No white spots in my screen.

Performance: Overall, phone feels sluggish and overheats oftenly, sometimes for no apparent reason. On 3D games, it works just average. From the benchmark results, you would expect much better performance from the phone, really. And the overheating issues are very annoying. Maybe everything in here is software-related, but I am no expert to judge this.

Software: I am currently using the July ROM. Was scared of upgrading it after reading the feedbacks in this thread. It is great that it is almost stock Android with just a few very nice additions (granular permissions, off-screen gestures, ability to use MicroSD as primary storage, etc.). On the other hand, ROM feels very sluggish (UI, UX) and has crazy high battery consumption on idle state. Looks like it is a badly executed ROM, even though there are great ideas on it.

Battery: Battery life on this phone is absolutely horrid. Probably the worst smartphone battery life I have seen in my entire life. Even with light use, I can barely get 2 hour screen on time with this phone with adaptive brightness at 50%. It is crazy. At least it does charge fast (not Quick Charge 2.0 fast, though). Usually, takes around 1h45min to charge.

Audio: Audio is fine. The loudspeaker is loud, even though of not great quality. But it is much louder than other phones that I did have in the past.

Camera: Camera on the phone is just average. It does take OK pictures in good lightning, but it still leaves a lot to be desired regarding picture quality, focus and specially exposure. Videos look very shaky, as well.

Fingerprint sensor: Works absolutely fine. As astounding as that might sound, it works much better than my iPhone 6 experience. I get it right the first try around 90% of the time and usually when the first try fails, it unlocks in the second try. Fingerprint sensor on this phone is great.

Price: I paid on mine 164 USD, on a flash sale. I believe that it was a pretty OK price point. However, for this value, the Meizu M2 Note looks like a much better value-for-the-money option. The same could be said for the Xiaomi Redmi Note 2, but I have not tested the Redmi Note 2 yet to confirm this. Xiaomi is surely a much more trusted company, though.

Overall, I am not exactly frustrated with the phone, but there are plenty of compromises to it. This is an OK phone with some qualities, but I would not recommend it to anyone.

As for the ROM, can anyone tell me whether I should upgrade the stock ROM to 20150811 one? I am nervous about doing so, since there have been plenty of negative comments about it in here.