When I went to Detailing in Irvine, CA. Their drying towel didn't' look as proficient as CG's so didn't get one.
Are you talking about the large, gray 630 gsm towels? I have two of those and they work great! I buy all my MFs there because I like being able to inspect towels before purchasing. I am usually disappointed when I buy MFs blindly online. I haven't tried CGs towels or Guzzlers though.