I can vouch for the quality of the GroGlass ArtCare Water White. I have used it several times over the last few years.
I was framing my last Dead Link Removed, at Haven Studio Gallery in Wyoming, and I have used this glass. I am pleased to say that the shipment, which I got from Frame Destinations last September, arrived in a perfect shape, cut very well and attractively priced. The only complaint I have is that some visitors were more amazed by "surely there is no glass here, I can't see it!" than the photographs...