I own a number of CRKTs. At one point in time, I fancied myself as sort of a collector of them. I frankly liked every one of their knives I put my hands on. (Never bought any of the Commander series.)
My first "good" knife was the M16-14. This was my primary carry for 18 months or so, with a couple months out for the large KFF. When I finally lubed the M16 enuff, it became so easy to open with the flipper that I knew I could get it into action quite a bit quicker than I could the KFF. The KFF, however, fits my hand so well, I've always been convinced that they snuck in one nite and used my hand for the model in designing the handle. Mine came very sharp from the factory.
Like one other poster -- sorry, forgot name -- and in response to extremfishin's question, my favorite tactical CRKT is the large Apache. The long handle feels great in my hand, and when closed, there is enuff at both ends to use as impact weapon should that prove appropriate. The blade is thin. IMO it was designed primarily for combat. It has a little belly to the blade, but the distal taper, and slim profile of the blade scream "STAB, STAB!" to me. This knife came extremely sharp, and has ATS34 steel.
Am not sure whether to rate it #2, 3, or 4, but I also really love the large LUS I have. I think for it's regular price, it is one of the outstanding bargains available, even amongst CRKT knives. It is extremely versatile -- tho not ambidextrous -- and would certainly serve well as a self defense weapon should that prove necessary. I also love the fact that it is gray, not black.
IME, the AUS6 is very corrosion resistant. Much more so than the AUS8 on the M16. Still, wish they'd gone to a better steel for the new aluminum KFF. Someone asked if that has the LAWKS. Yes, it does.
I carry the Apache some, rotating it with the Spyderco Wegner. The Wegner rides about 4-5 days to one for the Apache. That isn't to denigrate the Apache. It is just that I truly love my Wegner.
By the bye, SMKW still has a couple Apaches available at closeout prices. Tho I don't normally care much for combo blades, the Apache 3 is an incredibly cute little knife. For $15, even with the combo blade, you simply can't go wrong. It should make a fine little gent's knife.