Mamba Max/ Max Pro in a Stampede

Hello all,

I have the opportunity to buy a Mamba Max or a Mamba Max Pro. It will go into my Stampede with the Velinion 3500 motor. Which one would work better and why. If anyone can throw any light on this subject I would appreciate it.

Thanks

I don't own any of those but the mamba max pro sounds like the best out of the two