If I had to do it all over again....
loaded m3 75k vs 90k m5... I would folk up the extra cash and get the m5. Let me explain why...
1. POWER... new m5 is a beast... with a tune and a couple things youll be at 700+hp...I WANT THAT
2. Its newer
3. M3 isnt exactly a slim weight...I doubt the extra pounds will be that noticable for someone like me who doesnt track
The m3 after two years of ownership just feels slow to me.. or better yet not a lot faster then other cars I drive.
HOWEVER, give me 90k and ill be buying a gt3 rs right now