I'm trying to decide on a knife for very light keychain carry. I have a Fenix E05 and Fox 40 micro whistle currently, took my Leatherman PS4 off, just to heavy for what I wanted. Thinking the Spyderco ladybug is the obvious choice, but not sure which one.Ladybug plain edge vg10 or zdp189?Ladybug salt plain edge or hawkbill?