Twin VXL is the better choice. I run the V-Twin but it is uncontrollably fast. It would perform better on the track on 2s packs. The 10L isn't a great choice, but neither is the Velineon. The 10L won't get 40mph on 3s. The 10L likely won't get 40mph period in an E-Maxx. I would need video GPS proof to believe it. Here is my V-Twin on 3s LiPos.