I was a big Conti Mountain King (F) and Cross King (R) fan for a while, but I definitely like these a lot better since I switched last year. They are on sale for $35 now (I'm assuming a new tire is coming from Trek) at various online bike shops and the Trek website. The recent XR4 and XR3 that I just purchased last week I had to obtain from 2 different online bike shops to get the size and color I wanted...I'm not a fan of tanwall. Ebay is another choice to find them.