My install went well, yesterday.
I was running CM11.
I did a full wipe for the install and used the tap/touch app to move all my data/apps over to the CM12 install from my second Razr M. (unlocked, rooted and running stock KK)
Issues I had so far were running out of room when updating apps, cleaning up my internal memory fixed that.
I noticed my mobile network was set on Global and when I changed it to CMDA/LTE I lost my data.
I changed network mode to LTE, rebooted and still had data drops. I changed back to global, rebooted, wiped Cache/Dalvik apps updated and network mode went to LTE. Have not had a data drop since.
My two email accounts from Verizon had a couple of data sync errors.
Today everything seems to be running great.
I really like the Android 5.0 features, going to a black theme would be better but I can’t complain.
Better to be a Racer for a moment, Than a Spectator for a lifetime.