Well, onplus have been a flagship killer lately. their oneplus one was a big seller in last two years. then successors of oneplus one rolled out as oneplus 2 and oneplus X and now finally oneplus 3. this phone has an unbeatable configuration compared to any other phone. and it costs just 27999 in india while as samsung s7 cost was 49000 when it was launched. this phone is loaded with 6GB ram and 64GB inbuilt and snapdragon 820 which is kind of beast. it got some memory management issues at start but oneplus left an OTA update which fixed this.
PROS
High-quality build
Very good heat handling
Excellent value
Solid camera
CONS
Inconsistent battery life doesnt impress day-to-day
Innaccurate display colours