Cannot tell you the difference between the Coglins or a military model, but I already know you are better than I am at using the can opener or your SAKs. My attempts at lid removal is about the same skill level as buthering via 4WD, a big mess.

If you want to have enough to give them away at will, you could buy 100 P-38s for about $20, or 100 P-51s for about $30. See: http://www.sportsmansguide.com/net/cb/cb.aspx?a=372726.