Cent-A - The best of the bunch. Zombie Cent is very durable usually. Balistic arm is fragile.
Cent-AL - Meh, probably the worst. Needs the fragile arm to have enough firepower to be really useful, but you can't commit much firepower to the arm as it falls off.
Cent-D - Can be fun with a huge engine, otherwise it can do builds similar to the A simply with a higher engine cap. If you want to drop one missile for a larger standard engine, then this is the mech for you (Standard 300, 2 ML, 2 ASRM6 could be interesting). Not horrid with an XL if you go fast, but not that great. Good news though, XL300s are awesome in general. So it's not a wasted starting engine for the mech.
Just to throw in there:
Wang - AC20 and 2 MLs. That's about all you can do with it other than maybe 2xUAC5s.
AH - AC20 and 2 missile slots. Meh.
Edited by Bront, 28 September 2014 - 11:43 AM.