Need advice on bl motor for E-maxx

[j-man]

I recently broke my EVX, and am building a replacement system for my E.
For ESC, I am thinking Mamba Max or Warrior 120/20.

Not looking for high speeds, even 30mph is much where I drive my car.
Wich motor would bring me the best runtime whit desent torque (better than stock), 7/8/9 XL or 7/8/9 L?

I'll be using 12 and later 14 cell packs and gear it to go approx 25mph (give or take couple of mph). IB4200, GP and Sanyo cells.
Runtime is the most important factor and better torque than stock.

Thanks in advance.