I am not particularly a fan of PSA but I have to agree. I have been tracking Desert Shields Chipper Jones cards for a while. It seems as if a PSA 10 grade brings a premium over other grading companies as well. This card just sold:
http://www.ebay.com/itm/1991-Topps-D...-/380691360300
For $4,839, while the BVG counterpart in Gem Mint goes for about $2,100. I am thinking of converting mine to PSA and I am not a registry participant.
Z Wheat