Since you mentioned some mid range production knives (with the exception of Benchmade which has excellent stuff in a range of prices), have you looked at the Camillus Heat ? For $55 delivered, you get an EXTREMELY sharp edge, great lock up, and very good steel. [OK, AUS8 is not ATS 34/S30V/154CM or VG10, but still very good steel.] My Heat is the most bang for the buck I've ever spent on a knife. I love mine for EDU (everyday use), and it is so light it won't tear up your pants. I would avoid the black blade as the coating isn't durable, but the AUS8 isn't gonna rust on you if you wipe it down after cutting up lunch. Check out the many reviews of the Heat. I also like my CRKT Lightfoot M1, another super value (also under $55 delivered). If you want to spend $25 more, check out Benchmade's Griptillian series. Good Luck !
Mark
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"Seven Times Down,Eight Times Up!"
Soke Shogo Kuniba