I got mine from World Upholstery and am happy with the top. I'm not happy with the way it was installed, but that isn't the fault of World Upholstery. That's my fault for farming out something I should have done myself and not getting references when I did it.

I think everyone who has ever bought a top has convictions about it one way or the other, but there's only a couple of sources for soft top canvas, so all the material comes from the same couple of places. As long as you deal with a shop that's been in business for a while and offers a good warranty on their product I think you'll be fine.