I have a VPI 16.5 and have never been happy with the supplied brush. I found that almost all brushes are synthetic and when the tips of the fibers are examined, they are cut leaving square flat ends that do not get deep into the grooves. They do spread the cleaning fluid but otherwise not great. I now use a shaving brush. These are made with natural badger hair which is soft and has a natural taper at the tip of each hair. These can be obtained at any pharmacy. I paid almost $30 for mine. They are too soft unless modified. I wrap mine with a rubber band to make it stiffer. Tape also works. This spreads the fluid beautifull and gets into the grooves much better. After wet cleaning, I remove static with an antistatic brush form Mapleshades. I occasionally use a zerostat. This has worked very well for me.