Hedger, i absolutely agree with you. my experience is with LB7s. i have about 20, a few mint, others well used, but all have smooth, tight blade action and 100% tight lock-up and zero play.
and yes, Schrades are very impressive how a "working man's" knife was always built to such fine tolerances that 20 or more years later the function is still perfect.
i have not found this to be so reliably true with any other manufacturer.
roland