The biggest mistake for was doing a test driving of the CTT first. After that I never had any interest in a CS. My CTT 08 was in the shop for one week after purchase due to a bad smell in the vents, so the dealer let me borrow a 08 - CS. When I got back into my purchased 08 CTT, it was like driving two different cars. Only one think I liked about the CS, the gas mileage was better