I believe they are just about all equal when it comes to peel and stick felt. I have tried Michaels, Hobby Lobby, Ac Moore and Walmarts. They are are equal in my eyes and I buy from whoever is closest to when I need it. Prices are just about the same. Now if you are talking about felt that is larger in size and has no sticky back then that is something else. I buy that from a true material dealer or store. I have a few in my area that sells material for dresses, curtains and things of that nature. You buy it by the yard. I use for various projects. I use 3M 77 spray adhesive to secure it. The weave is tight and strong. You can easily see the difference side by side with the sticky back stuff. I have also bought from these people and like the product.
www.dickblick.com/products/quick-stick-felt/
Now if you are talking about velvet. This is a totally different topic. By far hands down the best velvet I found is here and just used it on my Gamblers clock /pen holder I shown here. Thickness and quality is so much better than any hobby store.
www.rockler.com/self-adhesive-velvet-choose-velvet-color