i also prefer TWRP. in my case,i just have a distrust of clockwork,after what happened with the eris. bad flashes destroyed partitions and bricked several phones that never were recovered. also,recently,the clockwork was sending the charge into an almost unrecoverable bootloop when they tried to restore backups
nothing against koush hes done alot for the rooted community. im sure our clockwork is safe,and i wont encourage people not
to use it,but i personally prefer to use Amon Ra recoverys(when available) or TWRP.
even if it werent for any of that,emo horse is reason enuff to use it. clockwork doesnt have any emo anything,or even any normal horses
i also agree 100% with everything said about rom manager. even when it works correctly,it is an APP in working ROM. it will not always be there for you to use. clockwork recovery is much safer,and more reliable.
the last couple days ive been messing with a droid 2. those who have the pleasure of the TB being their first smartphone/android/rooted device,you really need to mess with a locked down moto to appreciate what we have here-the ability to load anything we want thru bootloader,and a nice solid recovery that is always there