Graham mentioned that the v2 VF-1's after the VF-1D will have a thinner pin for the shoulder hinge... you might want to wait and get those instead...
EDIT - if you want to get a 0S, make sure its the latest (Dec '08) re-issue... you can tell by the extra padding (bubble wrap and cardboard) at the back of the valk to prevent bent tailfins... i've had a chance to handle a floppy 0S and the new one is tight, almost as tight as the new v.2 VF-1's.