i was looking at the t-spec the other day (need a proper racer) and also the TC3, im not too sure about the aftermarket parts for the t-spec but it looks like a real speedster, or drifter..... on the other hand, the TC3 has too many aftermarket hop-up's and parts to list and is a proven race winner (i guess). it should also be a great drifter. it all really depends on your set, up. The Tamiya TT-01 is a great car, all i would suggest for it is to get an aluminium prop shaft (its a tamiya hop-up)(blue aluminium) as the stock one it comes with (plastic) Flexes...... Alot. my m8's tt-01 had a spur, bushing stripped and melted and a hole melted in his chassis because of the plastic drive shaft going out of alignment. The tt-01 is good value and is an allround good car for a lower budget. the T-spec is way better though, and only costs a little more, but i am not sure about hop-up's and parts. The TC3 is the best, costs more, but way worth the extra dough. and theres a S***load of aftermarket parts too

Hope this helps