Out of the box the TT01 is faster than a TL01. Mainly because of the transmission. The TL01's drive line is designed for a tank, it has too much rotating friction! the TT01's is silky smooth and quiet... perfect for a sports car. Also the handling is better in the TT01, the steering is more neutral towards cotrollable oversteer when you slide off the throttle. To me the TL01 felt more like a shoping cart(sorry!)
but I did have to put inserts into the TT01's tires, otherwise it had no grip through the turns, but it still handled great without them. as far as durability I don't know yet, only 5 runs, but the tyres are still good and the driveline is still sounding smooth. I like my TL01, its a great car, its just not as fast as my TT01!!