I have the Strada TC..excellent budget car, very tough and if you tweak the motor mount you can get it to run almost silent. I did a Diff re-build also and added some quality grease and that made it even more smooth. It's very agile with a 15t motor in it and better springs on the shocks.
The new TC Evo is even better, it's lighter and has a better chassis design, it includes a motor cooler too...very nice cars. All are fully ball raced too. And the Evo's are 2.4gh out of the box.
I run the new XB Evo 4x4 and I LOVE it. It's doing well and it's tough as nails.
I have the rock crawler too...I think I'll eventually finish the set and get the Truggy and Monster truck LOL... They are supurb
J