Spyder XT912 CDMA
CM11 Kitkat (OS 4.4.4). Pretty much everything works, at this point they are mainly adding features and working out the bugs. Some people still report having orange bars, APN issues, some audio issues and slow screen wakeup but those problems do not appear to be consistent and may depend on which nightly build they are running.
Most of the current ROM's seem to be running very well with few problems. There is of course CM11 and there are several other good ones.
Paranoid Android: the current version is streamlined and has few options, it looks and feels pretty close to stock android.
Liquid Smooth: the current version has lots of options, feels fast and smooth.
PACman: recently rebuilt and seems to be running well, it's a combination of features from multiple ROM's.
Other good ones include slimkat and carbon among others. There are some newer ROM's but some are still a little buggy.
So there are plenty to try out and play with to see which one suits your needs as far as features go. I use Safestrap which does provide multiple slots for ROM installation. You could always wipe the stock Verizon ROM but I like to keep it installed as a backup.
Motorola RAZR Maxx XT912 Rooted on verizon, Safestrap & TWRP with CM11 in Slot 1 & rotating PAC MAN, PA, Liquid Smooth, AOKP & others in Slot 2.