For some odd reason, I'm going thru this phase, and considering trading the 'Stang in for a CTS (maybe I want 4 doors...I don't know). I'm sure I won't, but I saw this on one of their forums:
http://www.cadillacforums.com/forums/showp...54&postcount=10

 

Wow. You'd loose a ton on the Mustang if you were to trade it in already. And that sure would be an interesting shift in what you want in a car. But you have to do what's right for you.

 

i love CTS's but i im a teenager i cant afford one. but the mustang for the price and everything u get is something ur gonna be kickin urself for in the future if u let her go. ur unique on the road with this stang. honestly CTS's r everywhere. i drive 2-3 a day at work. but new mustangs?? 1 came in and it was a v6 and i didnt get to drive it. they r VERY unique and u should know since u have one. with the CTS i think ull feel very sophisticated and comfortable but the fun will be gone. dont get me wrong i love the CTS but make sure u think about it from EVERY aspect before u say goodbye to ur stang

 

Are you considering a CTS-v or just a regular CTS? I'd love to drive the CTS-V, but you are looking at spending nearly twice what you did on your Mustang GT. They are two completely different cars. If money is no object I might go for the CTS-v, but no way would I trade my GT in for a regular CTS.