Are you required to run it as stock, or just with a 27T equivalent motor? Personally, I'm a huge fan of the T4...I've got 2 of them. The Team or RTR version of the T4 is much more durable than the FT T4 due to the plastic parts instead of the carbon parts. I broke an A-Arm on my FT T4 last weekend on my second lap on the track when I caught my front tire on the corrugated piping. My Team T4 running a much faster motor was taking everything I could dish at it. This included several end over end landings from about 5ft in the air. As a matter of fact, I'm so happy with my T4's after having them on a track recently that I'm thinking about cancelling my BO for a VXL Rusty and buying another Team T4 to bash with. And if you're looking for a pretty good deal on a semi-roller...check here:
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=019