Thunderhill is the best track that I have ever been to. Only been there once and the day I did, I got open track all day long and almost 250 miles of track time that day. I think back to that day like some people think back to the birth of their children. I didn't care about lap times that day because I just had so much fun riding. The flow of that track was like nothing I have ever experienced. An R6 would probably be the best weapon but, any bike there will make you feel like you died and went to motorcycle heaven. Can't wait to get back there someday soon. Cresting T9 pinned and aiming for the water tower was the coolest feeling once somebody told me that secret. It was SO much fun.