I can't imagine being comfortable in a chair that presses your shoulders forward. Now I'm considering just buying one of those cheap IKEA chairs that I know from work.
I'd like to try a Herman Miller too and see if it's worth the money, but I hear they are not made for tall people (I'm 195cm).
A standing desk would be nice, but I doubt that my desk-mounted bunch of monitors would not be swinging around like crazy while typing, considering those desks usually only stand on two legs.