I want one. Definitely a 29'er, but rigid, hardtail, or full-sus? I'm thinking rigid but with suspension capable geometry so I could suspension fork it if I wanted to later. A 26" wheeled frame is a little tempting though because I could swap parts over from the HiFi, upgrading the HiFi, and basically have the SS as a bonus bike but I think I really want a 29'er so that's probably out.
My cyclocross bike is a lot of fun to ride on the trails but the wheels and fork sometimes make loud popping groaning noises that just leave me wondering if maybe I'm pushing it a bit to hard. The body positioning is kind of scary on bumpy descents, you just can't push back far enough to confidently use any front brake on a descent and the rear is skinny so it skids really easy if you break ground contact for even a moment.