Our friends at Motoringfile (http://www.motoringfile.com) have a nice comparison between the 335 sedan, 328i coupe, 328 wagon and MINI JCW GP. He did a pretty good job with the comparison as far as I'm concerned... having driven all 4 I would have to make the same observations too.

http://motoringfile.com/2007/01/04/comparing-the-bmw-335i-328ix-328i-and-jcw-gp/

I'll try to remember to update the link once I hit 20 posts... quantity before quality ;)