That's a good deal, but the only thing is that the TT-01's come with ESC's. Stock though, neither is fast, and if you want to upgrade, you'll need a new ESC anyways.
TA05 comes with full ballbearings, which is $20 extra for TT-01's so it's a better deal if you're upgrading the motor. And you don't have to buy a new driveshaft either, like you do for the TT-01.
But TT-01's with 12T motors are fast, just regear it lower and you'll be having a blast.
