Ventana X5 should be considered in that all mountain line up. I plan to move into a 29er in early 2006, but I've been very happy with it and the quality and support from Sherwood.
I know a guy in your weight range who races a X5. I know from his records that the X5 can be fast with the right pair of legs (ie - not mine).
I know a guy in your weight range who races a X5. I know from his records that the X5 can be fast with the right pair of legs (ie - not mine).