I decided to stay away from the M5 because there are really only a few 6 speeds built, and the choices are limited.... 6 speed was a must have for me.. There are also horror story issues of smg failures, valve issues, and overall more expensive to service then the M3... seems like the m3 had a lot less issues... The S4 and 335i were just too pedestrian, and lacked style.. The s4 and A4 look very similar, I test drove them all, and although the M5 was awesome, I just did not like the overall size of it.
Yes I did just buy this off the forum... this is a great place to buy from people who love and take care of there cars...