There are about a million threads like this...doesn't anyone use search anymore ? Anyway...
Imo....there is no best...TC6/6.1 are great cars with inexpensive replacement parts, great product support from associated, TOP has a great product in the photon, and soon to be released ex should prove to be at least as good.TOP parts are also fairly inexpensive, Xray and serpent both make awesome products,replacement parts are not cheap. Sakura i hear is cheap to own ,cheap to maintain with fairly good performance. Some people like one brand but cannot drive another. it is all up to the driver and what you like. Stick with a major brand and you can always sell it if you don't like it. Check with your local track and see what the other drivers are racing with,because in the long run that is where most of your support will come from. Check with your hobby shop and see what they are stocking parts for. Nothing worse that buying a kit and you can't find parts for it locally. The best car is the one you enjoy driving the most.Different strokes for different folks...