Not sure if this has been covered before but I found this article on the US version of the Mount Vision. It appears that, in the US, it gets a Whyte E-120 style carbon swingarm which looks a lot more stylish (imho). Also gets full XTR rather than the XT here on the 5.9. I guess it's all to do with licensing of the Whyte designs but interesting all the same.
I'll still stick with my E-120 all plastic loveliness though 🙂
edit: oops – forgot the link 😳
http://www.marinbikes.com/bicycle/bike_blog/?cat=16
Better 2010 pics/details here
http://****/mountain-bikes/marin/2010-marin/marin-mount-vision-5-9-mountain-bike/