My experience with ahtowels is only with two products. Their "plush thick microfiber towel" and "2 sided plush thick microfiber towel". I was very skeptical at first, too. So I ordered a half dozen of each. They are EASILY the best towels I've ever used. Altho I strongly prefer the 2-sided version and probably won't order the other one anymore. Honestly, I think the rest of their products look like complete crap and I wouldn't even wash my dishes with them.
I just wanted to mention them because they are so affordable and great quality. (And no, I have no affiliation with them.)
I can't remember who else I ordered from in the past. Since I only detail my own car, and occasionally a friend's, I don't wear out towels very fast. And I'm extremely meticulous about caring for them (since I learned quickly how difficult they can be to replace cheaply). A dozen towels will last me several years.
Prior to ordering from AHtowels, I would place small orders from various lesser known suppliers when I would find something that looked like a good deal, and was disappointed more often than not. I never placed a second order so I didn't have a reason to remember who they were (other than to avoid them).
I realize that you generally get what you pay for, but I was lucky in my early years and found good MF towels for $2 or less. That set the bar for me and I would always keep looking for new deals. For once I found a place that I'm willing to place a second order.