Oakleaf,
The suspension has what Spec calls a 'Brain' in the fork and rear shock. Basically, it's an inertia valve (that is user adjustable) that causes the shock to compress from a blow that raises the rear or front wheel, but not from you flailing about. It feels like a hardtail with the fork partially locked out till you hit a bump, and then it becomes active. From what little I have ridden it (three times including today), it works. I just set the threshold on them based on the kind of terrain, and forget it.

Biciclista,
I couldn't agree more. I tried a bunch of bikes but fell in love with the Spec. Now that I had the head tube cut to lower the bars by about 3/4" (photo above taken before) it feels good.