IMO, if the card gets a low grade (or Authentic), I think it would sell for a similar price whether PSA or BVG. The higher the grade, the more it'll likely sell for in a PSA holder as PSA's registry attracts higher grade collectors.
On a side note, if you wanted the protection of a holder, I'd go with BVG. The inner plastic sleeve does a MUCH better job of protecting the card from movement and the outer shell is thicker. Of course asthetically the thicker case is considered less appealing so ... to each his own.
Good luck, its a beautiful card!
Rob
