I don't know which pads you've tested but the Artisan are excellent in my opinion. none of the ones I've had have frayed on me.
understand if you're a bit angry buying two of them and both fail on you in a short time - I've done that many times with Steelseries and Razer most notably (QcK Heavy wears out in about a month, same with the QcK+ limited ones. Razer 'speed' ones are just plain... bad)
I don't think they use real glass no, but it feels like some sort of plastic material in the Shiden/ShidenKAI/Raiden - polyester isn't a bad guess then? or it could be some sort of glass-like material in the weave, who knows. I don't really care if it works very well.
the glide is really good though. precision's excellent. I feel they're well worth the money, and I've tried a *ton* of cloth pads trying to get one to replace my beloved Icemat and Slamepad (glass and aluminium pads) due to comfort issues. Raiden is the one that has done it the best so far.
the texture and weave is vastly different to any other pad I've used, what material it is I don't know - but they've lasted for a long enough time for me to say they're good. and didn't lose the precision over that time. which is really important to me. made in japan is nice though, hopefully the workers are treated well and such
and I have to say the Hayate is one of my least favourites, even if it's quite good. smooth and all but lacks a bit of precision. no idea what the material is.
the ShidenKAI is super picky about mouse feet though, something to keep in mind. and mine actually started crumbling when it folded in my suitcase. so there's something in it that isn't playing well with folding. not just cloth.
I'd be very curious about the Hiro 3D if it wasn't so small, gotten so used to the size of the Artisan I use now. durability is a big thing in my books.