It's hard to find things to complain about the TSX. My only gripe would be the Drive By Wire system. It's difficult to drive smoothly; the car jerks every time I take my foot off the throttle (like when I'm coasting to a red light). I still haven't perfected smooth shifting in low gears; it's probably due to my inability to drive stick, but I'm gonna blame it on DBW.
The suspension could be better, but keep in mind that the car is an Accord in other markets. They definitely could of upgraded the suspension for a sportier feel. In the end, I may be biased, but there's really no entry-level sports sedan that is better.