Rivet Shaver

I'm about to pull the pin and buy yet another tool. Does anyone have any feedback on the Yardstore Rivet Shaver 0.001 inch model?
http://www.yardstore.com/browse.cfm/4,7385.html
What would be the recommended size shaver shirts and attachments?

Is there really any need to go to a 0.0005 inch model? Thanks!

Another idea..

..is that you could simply buy a rivet shaver bit that fits into your countersink cage. Then you could use your drill (decent ROM) or die grinder (more RPM) to do the shaving. The countersink cage will allow you to "fine tune" the depth of the bit...