I have been using Samsung galaxy S5 for the last 2 years.This phone was one of the flagship models of Samsung mobile series. I bought this phone for 31K, but now the price has drop down to below 20K.
The key features I liked in the phone are camera, sensors, LED indicators with 8 different colors of light those can be used for notifications. The phone comes with finger print scanner, infra red sensor which can be used as remote control for TV, music system, air conditioner etc.
Drawbacks:
The phone hangs as the system is upgraded to new OS. Also it heats up on long time talk and charging.