My suggestion is to get something that has easy and convenient parts availability, preferably at your local track, if you intend to race. I like Tamiya (I'm an old-school scale model builder), but it is a pain in the neck dealing with ordering parts from overseas and having to bear the burden of carrying so many spares.
I like the look of the Associated TC6...the AE guys were sure flying at the KO Propo with it, it was between them and X-Ray, pretty much. I'm an AE guy in off-road and I like how easy it is to get parts, a lot. Honestly the TC6 would probably be my next car, if I were to switch.
Associated Factory Team SC10