Check out the Vaterra Glamis Uno, it's the only big RC car I have and it's wicked fun to bash with. It's discontinued now but you can find them used on eBay once in a while.
Speaking of the 1/8 Glamis Uno, is that something I can race with in RCHR? I'm not really a racer but I do want to drive it on a track at some point. I'm afraid to show up and screw everyone else up during the race though.