If you're looking to race then I'd say go with the TA05. If you're looking for a parking lot basher and drifter, then go with a TT01 or TB02. The difference between those two is the TB02 comes with oil shocks, ball diff, and is much more adjustable than the TT01. However if you're looking for something to race then you might as well just go with the TA05 since the prices are pretty similar with the TB02.
I think rather than everyone saying this car is rad and I like this ask yourself some questions like what parts does my local store carry so in case I break I don't have to mail order. Other things like what cars your friends race so you can get help with set-ups etc. I have a TA-05 and a Hot Bodies Cyclone both of which can win any day. My personal preference right now is a Cyclone at stormer for $249 can't be beat. If not I would buy a TA-05R since it comes with everything you need to be competative.
My 2 cents!
Speed Passion U.S.A. - Turtlemaster Racing