Between the accord and tsx, it really depends on what you are looking for in the car.

If you want a family car, you like the accord styling, and MUST have a V6, then go for the coupe 6 speed MT.

If you want a sports car, ie- tight supsension, much better gearbox, high revving 200hp I4 engine, go for a TSX.

If I were you, i would wait for the TSX to come out, roll on over to Acura and test drive one. Then, preferably the same day, go over to honda and drive the accord v6 MT. Words won't really do either of these cars any justice, you just gotta drive em.