Wow, thats a lot of info! I didn't even know about hard pak lipos, are the more resistant. Cuz I like jumping and I don't always land right.

And from what I understand from all the reply's is Lipo runs longer with the same power band then nimh but if you have a decent nimh pack then it won't be as noticable. Except the power you would feel is mainly because of the weight difference?

So then next question. Hard case lipo vs soft case lipo?

And then what do I all need to get these batteries running? And what set up is the most user friendly?