although i am a self proclaimed nissan nutswinger, the GT3 is one of the purest driving experiences that you will ever have (yes i have driven one, an 08 997). it's fast, handles amazingly when driven properly, fairly rare, not much more expensive to maintain than a GTR, and makes a sound that can only be described as God's own 6 cylinder engine.
see this:
Sights and Sounds: 2010 Porsche 911 GT3 - Motor Trend Video
might wanna get some tissues in case you start crying or worse...