My mechanical engineering class is going through a debate that I proudly started. First off I made everyone believe that the 911 was overall the perfect car. Which of course I truly think it is. Back to the point, now the debate is about which 911 is the greatest. From air cooled to water cooled. I haven't driven that many 911s. A 986 Boxster, 996 turbo, and my 964 c2. So I'm not really familiar as most members on this forum. So can you guys help? I just want to see everyone's opinion outside of my class. What's your favorite 911 and why?