hmm, from the 4 I have built kyosho, team associated, mugen, tekno. my next one will be an xray they all cost about the same and they are roughly all the same with each having their unique nuances and quirks. my mugen has been the one with least problems running wise, my tekno engineering wise they put a lot of thought into it, the team associated has a lot of configurations depending on how you want to run the chassis. my buddies enjoy my kyosho the most but that is because I figured out how to make that into a Baja Bug and everyone wants to run the beetle when I bring out the cars. the only thing I do not like about my kyosho is the lack of parts for it. not many aftermarket hopups such as bodies.