Advanced is a bit scarier as have seen more bad offs in that group than any others. That being said, I love running in advanced. The point by spots (in corners) and level of cars is truly awesome! I love seeing a Porsche Cup car coming up on my ass as I'm making the pass on a vette
Back in topic, had a S/C stang blow in front of me at Road America, I'll try and dig up the video. Some scary shit.