A flagship model is generally the "best" offering that a company can make. It is usually more exotic and more expensive than the "normal" models.
For Honda, it's the Acura line - for Acura, it's the NSX
For Toyota, it's the Lexus line, etc.
Chrysler has their "Viper" as a flagship.
The C22 Michael Walker was the flagship when it was intoduced many years ago.
It had had carbon fiber scales with a highly refined nested titanium linerlock (colored). Titanium clip (colored), ATS-34 steel, phosphure bronze bushing and it was a multinational effort. (invloving Spyderco, Hitachi steel, Swiss manufacture (Klotzli) & some German subcontracting. Quite the effort.
I would have to agree that at this time, our Military / Starmate & the Centofante models are "the leading edge"; with machined G-10, nested steel liners, CPM-440V, Eccentgric Pivot, concave linerlock-tang interface, very high strength to weight (Military is lighter than the G-10 Police), SecurLok (in the Centofante) and very high build quality.
Next year...we'll see?
sal