New brushless setup for my E-Maxx, would this be good?

[Gee]

I don't have the same zippy lipos that I do turnigy lipos so I can't speak on the difference between the two you have listed above. The couple of turnigy packs I have tried so far have done thier job as have the zippys. I think the the turnigy are a good lipo and haven't read any negative comments about them to speak of. I would get the better of the turnigy packs (5000mah) it should handle your setup fine. Better to spend the extra 10.00 per pack now then spend another 100 later when you discover the runtime is about 5 minutes too short of your race/bash session/lunch break, etc......