No liner lock knife can ever qualify for best folding fighter for me. I know I sound like a broken record, but I've seen and defeated too many of 'em. Just yesterday I ran into a folder from the maker of the KFF (but a different model), that the owner told me he had tested thoroughly and was rock solid. I defeated it quickily and easily. I don't trust those locks.
For "perfect" folding fighter, first of all I need a lock I can trust. The rolling lock, axis lock, integral lock, and extra-sturdy well-placed lockbacks can qualify.
Jim's rantings on the VG convinced me to buy one, and hands-on testing convinced me it's a great knife. You want length and lock strength, you got it! Go ahead, take your puny 4" folder against that 6" VG monster
'course, the dang thing is too big for me to carry all the time, so maybe it's not quite perfect! The KFF with a rolling lock, now that sounds pretty killer. I just handled an Axis, and it seems set up pretty good also, though doesn't have the large blade width that adds so much heft to the KFF.
With Spyderco and Microtech modifying their locks or trying new ones, it looks like a clean sweep of all the important manfacturer players searching to improve or replace the liner lock. We'll see some cool designs coming up, with locks you can actually trust.
Joe
jat@cup.hp.com