Well, it really depends on how many cells you are going to run. Right now I'm running 4s with the 10L (actually still need to make a batt tray and get the pinion, been wrapped up in school lately...) If I was going for a higher quality motor I think it is a tough choice between the 1509 and the 1512. Honestly I don't know which one I would pick, maybe one of those KB45's lincpimp just got...I'm leaning towards the 1512, but I like lots and lots of power....

Bye