If you wanna stick with HPI, get a Pro 4! Don't get a Pro 3...you'll have to put a lot into it to get it competitive. The Pro 2 would work better than the Pro 3, but it's old technology and parts would be scarce.
Choose from any on this list and you probably can't go wrong:
HPI Pro 4
Yokomo MR4TC SD
Those 5 will be the easiest to support and get parts for.
Good luck with your decision.
USVTA Member #211
Yokomo BD7 (Mod TC), Corally Phi '07 (VTA)
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