rebug is probably very stable.
habib is pretty straight forward with the feature set
rogero, well we wont be seeing any updates anytime soon.
best is very subjective.
habib, fast to release
rebug, very tidy work, they test thoroughly before rls
rogero, used to be the goto cfw before, not as fast to rls before like habib and not to late like rebug, usually a couple of revisions of the same release due to bug fixes (bsod fixes etc)