I own one and the OnePlus One has its own set of problems. Maybe most annoyingly, the touch screen doesn't work in warm weather. It also took them months to fix

I own one and the OnePlus One has its own set of problems. Maybe most annoyingly, the touch screen doesn't work in warm weather. It also took them months to fix very basic functionality (the touch screen had ghost touch issues for a great deal of people in the beginning). Support barely exists (I don't know if they managed to improve on that by now). Also CyanogenOS is getting more and more annoying, with tons of crapware being bundled (a weird dialler, Cortana) and even ads (the "open with" intent chooser has suggestions to install Microsoft apps for certain file types). Oh and it frequently doesn't play well with Google Play Services. There's an awful lot of battery drain because Play Services doesn't seem to like some of the modifications they made. Currently mine loses some 30% of charge overnight in airplane mode.