here some help.

TT01: the tto1 is a infamous for being a "budget drifter". its a great drift car to stat out with (parts are easily found, lots of hop-ups, and they come out with a tto-1 D witch is drift ready). i have one and i use it for practice. the only problem is that they lack at tune ability.

prices: 100 for the kit. tt01-D is about 150 and make sure to buy a one way diff. for the front. it will make all the difference.

TA04:is a great chassis as well. lots of hops ups. is almost like the sprint, belt driven, but has a lot of after market support.

price: 130 for the kit.

Tb02: im not a big fan of this chassis so i wouldn't suggest it.
TC4: the tc4 is a great for drifting. i had one before. they have lots of hop ups to make them drift properly. the tt01 is just as good and is based of the tc4. the only real problem with the tc4 is that they have been discontinued. so parts will be harder to find.

price:220.

Sprint 2: also consider the HPI sprint 2 drift is a great drift car. and for about $200+ there driftable out of the box.

price: 220

i personally drive the tt01 for practice, my sprint for inside tracks (since it belt driven), and a yokomo for compitition.

hope that helps.