hello guys; im in the market for a great performance coupe or sedan. i've been looking at 2003-2004 mustang corba's, 2001-2002 Z06's and a few older AMG mercedes but then i remembered the beautiful and luxiourious (and not to mention dominating) M5. only problem i'm not really familiar with these cars and i was hoping that i could get a little backround on these cars and in particular, the 2003 M5. pros? cons? performance? longevity? any help would be greatly appreciated.