New to nitro. Hmm, might be better off just starting with a stadium truck. But I'd say if you want a monster to bash with get the tmaxx, revo, or savage. If you want to race the jammin, or hotbodies lightning truck would be the ticket. I've not seen the jammin run in person but have seen alot of lightnings. That thing is a pure bred race machine. Whatever you get just be sure to run the engine rich for awhile while you get the hang of tuning.
Reason I say a stadium first is, the engines are cheaper, and maintenance is just the clutch and one tranny/diff. Put it this way, I can tear my gt down clean it and have it together again in about 2 hours. To do my 1/8 scale right I swear it takes 10 hours or more. It's alot to bite into. Don't run them in sloppy mud if you're afraid to tear it down to a bare chassis!!
Todays nitro motors make learning tuning pretty easy and fun as far as I'm concerned. How much you looking to spend on a setup? If you get one thats a kit and not rtr, I'd recommend a P5 for a high dollar motor, or an os21rg for a budget motor. Depends on your funds.