Each time i run my Tamtech i am impressed by the precision of handling and acceleration they have. Only I am bored with the short runtime they have compared to the mini-z, but thats because my 7.2v packs are too old I guess. So I'm more into mini-z at this time, especially because I have a track in my apartment that is too tight for a Tamtech. Mini-z have a small turn radius and that makes a difference