STAY AWAY from finedesign. My buddy ordered a "kit" from him. What was supposed to be an XLT motor was actually an L can motor that was labeled as an XLT. He likes the high kv motors.
I'd just go with either the Feigao or Wanderer 8XL for 12 cells. If you want fast, you could go for the 7XL, but that's gonna get hot. The 8XL on about a 14/46 gearing is just right for 12 nimh or 4S lipo.