brushless 1/10th truggy (help and opinions?)

[BrianG]

The MM ESC and an S or L motor on 3s/4s would be killer. Even a regular S motor has more power than a MM motor despite the similar size because there are more coils inside the feigaos.

I say 4s because the higher voltage will allow you to use a lower kv motor, which pulls less current and you won't need really roibust batteries. A 4s1p 5Ah maxamps pack should be perfect for that and be light as well.