Well, I am thinking about that I would take 12-15t pinion. IS that a true 5S LiPo pack is too overpowered to drive anything else than speed running ? 4S is maybe better choise because I want to drive something else than speed run all the time :D . Good handling is the main thing, speed can be offcourse good with 4S LiPo batteries too. That 4S looks like good quality and price battery:
http://www.rc-monster.com/proddetail...=PQXP4s600025c . Anyone agree

?