Honestly - - -
- - -I don't think I've tried any other than the Wilson brand. They last a LONG time with hardball equivalent handloads, though.
What brand have you been using? Do you have a figure on the number of 10mms it takes to "use one up?" I've never kept track, really - - I just glance at the one in use when I clean the pistol, and replace when it starts getting doggy-looking.
Best,
Johnny