I have been using Lenovo k3 note last 6 months,
I must say this phone is the best phone in this range with all the features and specifications required by anyone.
Pros: Excellent camera
Good battery life.
5.5 inch full HD display
Very handy( not bulky like Samsung note phones)
Dolby digital sound
Call quality is also very good
Having lots of customized features.
Cons:
Iess internal memory available out of 16 gb memory
Some lag while playing high end games
Overall phone is great