My girlfriend drives an '07 Mustang GT M5, and I can't stand it. The gearbox is a slushbox, and the clutch is junk. It's bad to the point that I let her drive my camaro for 2 days, after which she thought something was wrong with her clutch... The amount of effort needed to depress it is insane in comparison. It also engages very slowly.
You'll love the six speed.
