If I had to rank the aforementioned aftermarket backglass providers:

1- Webb

His silkscreens are by far superior to "translite". But, I have received two glasses (World Fair, Sweet Hearts) that had the pinhole issues. Only limited Gottlieb titles available.

2- Gary Conway

His translite translation is great. The translucence is well done and his masking is good. I had 7-8 glasses from Gary and I was happy with them. He does all the majors, as wells as others. That a big advantage and consideration when I am considering a purchase of a game is the knowledge that Gary can reproduce almost every title I ever needed...and he doesn't have it, I can send him the tired glass and in a few weeks he sends a beautiful replacement.

3- BGResto

Same as above, but I only recently purchased my first glass from BG (Heat Wave). It was well done.

You're quite right. Any silkscreen is superior, but I never really dealt with Shay.