I owned my OPO for a year. To sum it up the OPO had the best battery life of any phone I ever owned, had a great screen, and I enjoyed the doubletap to wake feature. Negatives were that it had a horrible camera that never worked properly with many different programs, CM stopped giving consistent updates and OxygenOS was buggy, and it didn't have wireless charging which I missed from my N5. Since I came from the N5 that had a decent camera, consistent software updates, and wireless charging, I went to an S6 which has the best camera and wireless charging.
I would NOT get the OPO again. Software and hardware means a lot and the OPO may have the stats, but nothing else plays together well.