[mlin]

The thing is, when you ask questions like this you are going to get a wide array of responses as per each individual's opinion. Thus, it is my advice that you just start trying them all til you find what works for you. I notice some programs cause instability on some ROMs while not others and vice versa. Give it a shot as it will surely depend on the programs you use and your personal preferences. Hope this helps.

To list a few:
Juicy 7
Mighty 5
Merdihn's 6.5
Star ROM
Phantom
Caulkin's

Sorry for any I've left out, these are just the ones I've tried.

By the way, I am on sprint though I know most of these are not carrier specific.