Hello all - I am just compelled to add my 2-cents worth on the topic. My regimen still uses my favorite and best working paper towel applicator (for me anyway), the "Viva Vantage" which was discontinued about a year ago. I still have a couple of rolls. It is more stretchy than a typical paper towel, sort of like the stretchiness of the blue shop towels. I always cut them into pieces with scissors to prevent any loose fibers caused by tearing. I also fold them into applicator pads so that the cut edges are buried in the fold - again to prevent any potential loose fibers. I'm going to have to try the "Viva Signature Cloth" and "Scott Blue Shop Towels" when I finally run out of my precious Viva Vantage I guess.
In any case, here are my words of advice: Find something that works well for you and then be brand loyal and stock up because you never know when the manufacturer is going to discontinue it or change something.
Dave
PS I tried the closed cell foam that was mentioned previously for about 6-months, but found it to be less consistent in application and frequently causing a rough or irregular surface that required more aggressive sanding and all of the complications that come with it. Obviously with the success that others have had using closed cell foam (or small plastic bags, etc.) it has as much to do with applicator (personal technique and regimen) as it does with the applicator (material used).