Currently running a 7950 with another on the way.

Im using the following:

win7 64bit
cgminer 2.11
MSI Afterburner
AMD 13.2 beta 7

What is the best config for cgminer with these cards? I have been messing with it and when I think I have it going, the cards crash a few hours in.
I pretty much am just changing out one setting at a time since I really do not understand what each one does and how it affects hash.

What number in cgminer is the hashrate I should be looking at when trying to make it faster?

Thanks in advance