If I understand correctly the ML8 uses a coil assist in the rear shock. My ML7 from 2001 has a coil assist and I really like the plush ride that it provides. I was considering the purchase of a 2008 Durance was curious if it could use the shock internals as used on the ML8. I don't need or want the weight and extra travel of the ML8 but it would be nice to have a really plush ride on the Durance. I demo'd a 2007 Durance, with the air spring only, and it definitely seemed less plush than my old ML7. That said I am sure the Durance can be tuned for a softer ride and in all fairness the demo bike was not in the best working order.