** FIRST **

Running on CM12 nightly for my 16GB OPO now and still on 44S for my 64GB OPO.

Keep it unlock. OPO is one phone with plenty of custom ROMs. U might want to try all before settling down on one.

For no reason, my OPO rebooted itself and stuck on One+ logo for very long time.

Can enter Fastboot but not recovery. After I boot recovery via Fastboot, found no /system folder. Aik? I didn't update the OTA or install anything weird today.

Had no choice but to flash CM12 nightly 28/02 and nano GApps to boot it up. Hopefully data still there.

Yes. All data still intact except for Blacklist and SMS. Those 2 need time to set back. I had over 200 numbers on Blacklist mostly from spammers. Now must start over again.

I got Red - sealed in original package.

CM12 Nightly have microphone problem - other side can't hear u or too much echo.

I've 2 units of OnePlus - one with OxygenOS and another with CM12S. Both rooted.

I charged and left both on my desk. After a day, the one with CM12S still has 80% power while the one with OxygenOS down to 60%. Both don't have any apps installed except for SuperSU.

Camera-wise, OxygenOS with Google Camera does output some decent quality pics. However, the output from CM12S are overexposed.

After 5 days, mine 64GB phone with OxygenOS down to 30% while the 16GB phone with CM12S still have 50%.

No apps installed except for SuperSU and both are rooted.

Official OnePlus forum