I have both Kraton and Outcast. Same basic design. Can't go wrong with either. I run mine on 4,5 and 6s. 5s is the sweet spot I feel, but you need to change the stock esc to run 5s. The arrma esc only does 4s or 6s. You won't be disappointed with 4s.

Pull the trigger! Pun intended.

Trout