Although I never bought any to test with as I felt that they were only good for grungy areas (under hood, door jambs & wheel wells). I found that from a visual test, they are quite thin comapred to any of the towels I have from CMA (Magic, various Vipers). Tacscar & YoSteve.com would be equivalent to the Magic Towel from CMA.
Take a look at the TW towels and compare them to the pictures on CMA, Tacscar, or Yo Steve and see what you think.
EDIT: When I say compare, the primary factor here is plushness. The plusher the towel, the better it will be in the sense that it will trap dirt deeper in the pile and is less likely (although still possible) to scratch. I'm not saying that the TW towels are junk, in fact I'm sure that they are manufactured quite well, but their density of the pile is very shallow when compared to the plushness that you find in a CMA, Tacscar or Yosteve mf towel