well it really depends on what u want to do, from the sound of it u are looking for a race vehicle?

If u wanna spend the money get a kyosho, but they are pricey, both the truck and the buggy.

More cost effective would be the Jammin or TTR
Both have great parts availability, parts are cheap for both, cheaper for the TTR. Seems like they have worked out all of the bugs in the Jammin camp so early wear should not be a problem. I have had excellent luck with my TTR, very durable and great life on all the parts. Both cars and truggies are very tunable.

Next would proly be the mayhem buggy and ST, parts are cheap, quite a few guys run them, maybe not as durable as the above mentioned, but the Turmoil looks like a pretty sweet setup.