I checked out their site... it's only 12C though... :(

So Squee, where'd you see them packs at?.. :)

it was maxamps.com. its 15C and 90 continuous amps. there $133. polyquest are good from what i here.

You'll just end up spending more to get a higher C rate pack, as well as pulling extra weight around (the 20C cells weigh a lot more than 12C ones!). Basically, you could shoot for a battery that is rated at 50amps continuous, and unless you do only grass bashing, it should stay rather cool. Even with heavy grass bashing, it wouldn't get so hot that it could damage the battery (with optimal gearing, though). The Maxamps batteries aren't bad, and if for some reason your Maxamps pack gets damaged, they will help you out with it/replace it (assuming it isn't user error).

you can buy 2 polyquest 2s3100 packs for about 120 dollars, starluckrc has them right now. shrink the two together and wire the two packs to one deans plug. it is an extremely small battery and will fit anywhere. 6200mah, 12c constant 16c burst. its the best deal i have found yet and i have had nothing but good times with it.