Believe me Oneplus One is the best phone in the 20k range if you crave for performance. No phone can beat that 3gb RAM+ 2.5 ghz Snapdragon 801
The phone worked perfectly with Cyanogenmod 11s(4.4.4) but after updating ota to Cyanogenmod 12(5.0.2), touchscreen started behaving a bit wierdly.
Many a times the touch does not register with the phone and double tap to wake feature also does not work sometimes.
But this issue was resolved after the Cyanogenmod 12.1 ota update which came out in a few days.
Now the phone works much better and the best phone available on such a cheap rate of 20 thousand RS