Mine has a blade of 52100 forged, heat-treated, and ground by Ray Kirk.
Secure in the hand; framelock is all business (not one of those massively thick locks that has the almost hair-thin cut-away which makes the massive lock only as strong as the wee, little cutaway); smooth action; deep carry clip and titanium lock scale don't eat pockets; bead-blasted steel scale on oppositie side doesn't feel slick and lifeless like steel can sometimes feel.
If you go with 1095 or D2 ground by STR (two totally different steels), I couldn't imagine being unhappy.