hehe yeah I've got a few now havent I (and I'm actualy thinking about building another soonish)... I really enjoy the building part of them

Well I cant comment on the Yokomo yet because I'm still building it (waiting on some bearings to arrive. About a week and I'll have pics up of the finished car) but out of the other 2 I think I'd have to say the Sprint 2 is the one I have more fun with. I'm a big fan of being able to tweak and adjust the car. Infact I play with the camber alot still on the Sprint2 because I'm still experimenting with how it effects my handling of the car.
At first when I got the TT-01 I thought "great I can just drive it and not worry about having to adjust anything to get it to run right", but then I quickly found that I kinda wanted to adjust and play with things.

To me the Sprint2 also feels a bit easier to throw around and predict because the chasis is a little better balanced then the TT-01.

Give me a week and I'll report on how I feel the Yokomo fits in with the other 2.