Originally Posted by
Grizzbob
Well, if you're looking at a 6 cell(7.2 volt) NiMh or a 2-cell(7.4V) LiPo, honestly there won't be enough of a difference to notice. But speed will not be a significant difference in general....

Totally disagree. You'll notice a difference immediately. I agree with jasons36, I had the same problem when I switched to lipo. They were so much lighter and had so much more punch I had trouble driving my car at first. They're way better than NiMh.