I had an e60 M5, traded it in for an e90 M3. Much happier. The M5 is and awesome ride, but HEAVY and BIG. I track my car alot and there is no comparison on the track, the M3 handles better. I don't think the M5 is $30k better than the M3. As a matter of fact, I just gave up my spot for the F10 M5 and ordered a new e90 M3.
'00 M5 Carbon Black/Black GONE
'03 M3 Carbon Black/Cinnamon GONE
'06 M5 Alpine White/Silverstone GONE
'08 e90 M3, Jerez Black/Bamboo Beige, 6MT,GONE
'13 M5 Alpine White/Black Merino, 6MT