I let this thread run a little before jumping in... seems to as ripe as it's going to get.
I am not an "operator", but I pretend to be one when I answer the phone (knuk-knuk-knuk). hehe... sorry for that...
Operators and the knifes they carry vary every bit ass much as the knives all of you carry. But without a doubt, the BM 9053 and 9100 are the most popular. This is because they are readily available thru the Government supply system. The same is true for the civilian contractors who supply security for high visability US Government personalities.
Not so long ago, the Vice Chief of Staff of the Army was in "town", and of the 4 earpiece-wearing-pistol-toting civilians he had with him, 3 had the BM 9053SBT. The last had a Spyderco Military.
The plain vanilla units such as the one that I am in don't see alot of these knives because they just don't fit into the budget. But the "special" units tend to be a bit better funded for that sort of thing.
Just like any community of people, some are going to be more knowlegable in certain areas than other people. Knives are no exception. Those that know either scheme to get their hands on a freebie, or make the investment in a quality knife of their own. But anyway you slice it, for better or worse, Benchmade has the inside track on mid-highend military knives.