All of the towels I use are the culmination of many years of trial and error. As I'm sure you know, microfiber towels aren't cheap. I'd be ashamed if I actually added up how much I have spent to get to this point. I know I can save you a lot of time, energy, and money by giving you access to buy exactly what I'm using on my cars.
I've bought and thrown away more high piled, plush towels than any human should ever have to. They inevitably end up linting and just push liquid around. These are a very high-end version of an extremely simple towel. I use these in four different colors just to denote which is for what purpose.
Number I have in my cabinet: 25.
320 GSM: This is the weight per square meter of material. The weight does not necessarily mean the thickness.