I had the Der Wunder towel (blue) and loved them but thought they could be a little softer. I ordered the Ultimate towel (yellow) and really really loved them as they were softer and worked just as good but after a few washes they started to fall apart on me. David did replace the ones I used with the blue ones but had I known that the Der Wunder towel was the same towels that I already had (I purchsed my originals from West Coast Corvette/Adams Polish in Carlisle.) I think I would have went with the yellow ones again and just washed them by hand. So to answer your question, it depends on what is more important to you, softness or durability. If its softness get the Ultimate, durability get the blue. Another reason I like the Ultimate towels better is because they can be used with quick detailer as well.