AN glass -- any of the sellers' glass better than the other?

Well, staying home on a bautiful Sunday here in SoCal. Just looking at options. I see different sellers selling AN glass for V700 scanner. I'm looking for an 8.5x10x5 so I can scan all the neg area. Better Scanning, ebay, and fpointinc seem to see them at about same pricepoints.

I'm thinking they probably get it all from the same supplier? Anyone have bad or good experiences with any of the 8x10 glass? I think fpointinc has 8x10 but not really sure if it is just-a-little-bit-bigger than 8x10. And I emailed the ebay seller and he said "get the 8.5x10.5 to fit the v700 to get it all full frame.

Any pros/cons with any of these guys?

Thanks!