custom Emerson CQC-5, Horton Shawty folder, my Graham folder (Jon knows how to grind them thin), Pohan Leu small tanto, any of my Nick Rossi zero chisel ground knives and any of my Southards....
all of these are insanely sharp....my Krein Regrind Emerson Persian was perhaps the most terrifyingly sharp knife, that thing could cut you just by looking at it.
J