Anyone have any experience with the newer version of the Aeron chair?

[Ferzerp]

I have one on order to potentially ship out tomorrow (that is, if I change my mind I can still cancel) that has all the options except the upgraded casters. Does anyone else have one of these, and if so, what are your impressions? I couldn't find one locally to test. I did ask the only person I know who has one, and he said it is worth the price, but I am just curious if anyone here has one, and if so, what are your impressions?