Its one of the best performer in the market.For day to day usage, Trust me guys you can compare it with other devices in the same budget and compare benchmarks.
Benchmarks are just numbers and doesn’t tell you about real performance.
Here are some Pro n Cons:-
Pros:-
Screen is bright and vivid, Great viewing angles and Colors look natural.
Camera is decent, Daylight shots are good and capture plenty of detail, Video captures at 1080p and you also gets timelapse but no slow-mo.
Performance is good, you get 1 GB ram still there is no lag or stutter.
UPDATE - MIUI is pretty heavy on ram, the phone start showing lag when multiple apps are active.
Gaming, Gaming is flawless if you are the one that is buying this device for gaming, then this is the right choice for you.it can play pretty much every graphics intensive game with no or low lag.the frames drops are negligible.
Games I tested:-
Nova 3:- worked flawless
Max Payne:- worked flawless
Asphalt 8:-worked flawless
Real Racing 3:-There are some dips in frames here and there.
Music:-The inbuilt speaker is superb and sound amazing.The audio quality is crisp and you can even hear low and mid bass.
Cons:-
Design is not that great, fit n finish is good but overall design is meh and gives you a plastic feel.
Camera shots comes out little sharp and dark, but you can fit it by changing exposure setting.
MiUI takes some time to get used to as there is no app drawer.
I upgraded from my old Xperia SP, Both devices have 1 GB of ram
Will update the review after 2-3 weeks of usage.