Having owned an SRT-6 roadster for a few months as well, here are a few first impressions of the Limited coupe:

1. There's a lot more cargo space in the coupe than in the roadster.
2. The SRT-6 definitely feels more powerful but the Limited is still quite peppy. The Limited has more than enough juice to provide for a fun and zippy drive even though it doesn't have the completely unhinged power of the SRT.
3. The rear spoiler on the Limited is cool!
4. My Limited has the navigation system. According to the original Chrysler window sticker, it was a $1,200 option when new. I can't believe anybody would pay $1,200 for that! Compared to my wife's Tom-Tom, the Crossfire nav system is tedious and a little ridiculous. Trying to cram nav functions into the little LCD display on the radio just doesn't work.
   
   BTW, are there any updated CD's for the nav system? The ones I got are dated 2004.
5. Whoever owned this Limited took exceptionally good care of it. It's spotless inside and out (save for a hint of curb rash on one of the rims). My SRT-6 (bought with ~ 320 miles on it) came with some wear on the center console right near the seat belt latches on both sides. It's as though someone had a belt-clipped cell phone that rubbed on it. The SRT interior is black but the Limited's is grey. Does the grey just wear better than the black? I'm amazed that the Limited's interior still looks factory-new after 19,000 miles but my SRT's was already showing wear after 300.
6. The seats in both are comfortable but the suede inserts in the SRT-6 look better.
7. The roadster's interior feels bigger than the coupe (and not just because the top is down).

I love 'em both!!