The tC's are going to be very impressive down the line. More and more massmarket parts are coming out now. I bought mine about 3 months ago and the car has good response and a great short gear ratio for some serious acceleration. I personally love the car for all the features it has, but I will probably put on intake and exhaust in 6 months to a year when I feel comfortable with it. I'm not hear to say its the be all end all best car ever, but mine is completely problem free and at its price tag you can't go wrong. Beats a civic .

But on topic, HKS is the leading company right now developing for the tC, as you can see they are very serious about the car. By SEMA a company (possible HKS - i forget the name of the company) had a turbo in the car with new internals and it was putting out 500+ at the wheels. If only it was RWD, but the initial price tag comes back into play .