I've got some feedback after spending a bit of time with the F350MT. First, that truck is fun! And still difficult to control. I think it would be OK if there was a less extreme version. That's just me though, not really something you need to do. My real feedback:
The wheelies are still a bit hard to keep up with. Even with the wheelie bar I managed more than one backflip lol. The more common "issue" is that it turns and rolls while wheelie-ing. It is VERY hard to keep in a straight line at times. I think that may be a ST problem though, dunno.
The only thing that actually bothers me about it is the paint/textures. The matte look doesn't seem to work well with the truck, but that could be me.
Very good at everything you can do quickly, not so good at what you have to do precisely. So basically, its a monster truck. I like it! The suspension and linking looks and acts awesome, and I was pretty surprised at some of the crazy stuff it can do if introduced to certain lap-based "trails." Good stuffs!