Hey Paul,
When I ordered these, I think they only had two options so i went with CoverTuff. Which is the heavy duty material. The first time I ordered, I had a custom cover made for my gasser, so I sent photos and measurements and they didn’t make it correctly. They remade it and let me keep the original they sent, which is now a perfect cover for my 3D. I also have one on my Weber kettle, which is really well made.
My dad also has two of these covers. He just ordered his this summer, he has a #2 analog with one of the carts, so he custom ordered one. Again, they were off a bit on the size and all he had to do was pay shipping for the next one and they had him keep the original as well. So, they take care of you if something isn’t right when you custom order.
If you do purchase one, the shipping time took a while. I think these are made overseas and it took a few months. I don’t remember how long it took when I purchased mine a while back.
Hope that helps.