RE: tt-01 vs ta-05???
I don't think you'll really see any performance gain from a regular TA05 to an IFS. Most of the parts are exactly the same. You'll get to use some of their lower nosed body shells. I wouldn't shell out extra cash just for that unless the IFS system is proven to outperform the standard TA05. But if there was that much of an advantage, if any at all, all major race chassis would use it. So really its more a matter of body preference and having something a little different between those two.