The MT2 looks nice,since you are not racing on a "track". Plaidfish, you dont hear of them compared to the Losi and RC10 b/c the MT is 4wd,not a race truck you can run at most tracks.
How much are you looking to spend???The Hot Bodies Lightning Stadium is one HECK of a truck!!! You should look into "truggys" 1/8th buggies converted to trucks, the GS SUT and the Hotbodies are examples of these. Otherwise the Revo would be my choice.
As for aftermarket,it is HUGE for almost all types of RC. The Revo is getting as big of a following as the Savage,and the 1/8th buggy market is BOOMING. The ST are the ones that seem to have the least stuff for them, but that is a moot point. There is still a huge aftermarket for them too. You can always get a RTR,tear it down to get everything right,then upgrade as you break things.