ORIGINAL: HerrSavage
A Losi XXL will be about as fast as anything you can get, with the ecxeptions of something with some high end modded engines maybe.
Truggies are OK, but they break and wear out too.
The XXL IMO is about as good an RC as you can get.
Yes truggies handle better, but then buggies handle better than truggies. So you have to ask yourself, how often are you going to be running on a track? High end truggies are CRAZY, STUPID expensive. If you really want a truggy I would consider the Losi 8T 2.0 RTR, or maybe an Associated RC8T RTR. Truggies IMO are more for the track though.
MT's are more versatile IMO. Plus they can wheely...

(without needing some high end engine or locked center diff to do it..)
And the XXL is the best MT you can get...
If that's out of your league, get a Savage XL, dump the engine, and throw an LRP 30 in it. For bashing that'll do. A step up would be the Losi XXL. For something a bit different that yes, does handle better, try a truggy and get either the Losi or the Associated. And keep in mind the difference in handling from Losi XXL to Savage XL is about as much from MT to truggy. I.e. the XXL will handle MUCH better than a Savage.. IMO those four are what you should be looking at... Good luck..
EDIT - Just reread your posts. You haven't said what kind of terrain you will be running on. That is key to be able to give you the best answers. So, where will you be running it?