If you follow the logic of "more people drive it, so it must be better" and couple that with "it wins more, so it must be better," you're not really proving anything. Mathematically, the number of wins is influenced by the numbers of people running the car... if 500 people run car A, and 10 people run car B, odds are that car A is going to win more than car B. Yeah, the TC3 wins alot(!) but it doesn't necessarily mean it's the best car. I've said it before, Barry Baker/Tosolini/Cyrul could probably whip my tail with a Radio Shack special. In the right hands, lots of cars are dangerous.
Don't take my opinion to mean that the TC3's not a good car... that's not what I'm saying. It's a good car, has good parts support, and has a huge number of people who are able to help you with setup (something that's very important.)
I like belt drive cars. Personally, I can't make a TC3 work for me or my driving style. Doesn't mean it's a bad car, it just means that I don't like it.
Get with other people at your track and ask to drive their car, ask them why THEY like the car they have, and more importantly, ask them what they DON'T like about their car - that might just provide more insight than any other question you could ask. Then, check your LHS for parts support, and then make a decision.