Another option may be the new MRC Superbrain 989.
http://www2.towerhobbies.com/cgi-bin...&I=LXLTW4&P=ML
http://www.modelrectifier.com/search...ew.asp?ID=6863
Looks pretty slick for $169.
Can do 8s at 10A
and all of the other types of batts and it s Ac/Dc so you can use it in the pits and at home easily. Included temp sensor and can power a com lathe and other 12v pit tools. I'm probably gonna get it when it is out in a couple weeks.
Seems like a bargain for all it does.