I think true enthusiasm means appreciating cars for their strengths, not harping on their weaknesses. The C63 has phenomenal torque and straight line speed; the M3 has great all around handling, GTR has phenomenal speed and handling, etc.
Too many times on forums such as this, you get "my car is bettter than xyz," yada, yada, yada. Comments such as this just shows how narrow minded you are, and shows that you are not a true enthusiast.
I liken this to women. It's impossible to answer the question "who is the most beautiful".
Imagine making the comment "my wife/girlfriend is prettier/sexier than yours". Sounds pretty insipid and childish doesn't it...
Current rides: 2010 CTS-V sedan, black raven; 2010 Cadillac Escalade ESV, black raven
Gone but not forgotten: 2008 M5, metallic sapphire black, SMG; 2004 645ci, metallic sapphire black, SMG