How long do the Abralon pads typically last (number of uses) before they need replacing?  I''ve just started using the 500AB/xxxxAB method when surfacing on my spinner, so the 500 pad is seeing a lot more use than it used to.  I need to buy some more Abralon or Siaair pads so I have a decent supply of the various grits I need.  Also, how long do the Siaair pads typically last as compared to the Abralon pads?

Edited on 3/30/2010 6:35 PM