One tends to keep the cheap brush oblique, because the short rows of bristles inefficient the dust on the window to move, which means that it runs off and a scratch with the plastic edge in the vinyl treasures. After I had destroyed a mint-disc of the year with 74 of those cheap brush, burst me the collar. If you can not have a Samtblock between the rows of bristles brush, then I would leave it alone. At home, I use only the brush of Analogis. These junk brush I only use at flea markets in order to investigate the disks better. For more this is useless.
