well wife bought me the CS while at the Bloomsburg Jamboree.. which was awesome..lol.... but driving back through PA and most of NY the programmer kicks @$$... gives the truck a whole new personality and the seat of the pants feeling is crazy... I love it plus my speedometer is right again... but I know people have had the older edge but the new CS is great... wanted the CTS but wife wouldn't spend the extra money..lol but I wasn't going to complain she bought it for me and was only 350$ at the show.... just my .02 if anyone was thinking about getting one