tc4 or cgm ...
ultimately in the end all anyone can do is buy a car, try it out for a while and if you don't like it you can sell it and then buy a different one. there is absolutely nothing wrong in this process of elimination, the one thing that everyone always says is ... practice !!! if you or all take your time with each car and try everything available as far as tunability goes, trust me the possibilities are endless.
ps: don't forget to use the force