They both can be upgraded very easily, but the tl-01 makes a great drift car (first hand experience though, READ SIG).

I put a set of 2" PVC tires on it and it is a total blast.

I've driven both and the tl-01 is a better drifter. And with a set of Yokomo Drift Tires it would be SWEEEEET!

Hope this helps, tl-01 4 Life