91mm are the focus right now because my favorite (I know better than to claim "best" for any SAK) is the Master Craftsman (wood saw, metal file, large & small blade, scissors, cap lifter, can opener, Phillips, awl, finer flat screwdriver). Since you can effectively convert a Ranger into a Master Craftsman by replacing the cork screw I'm looking at what would be needed to make such a conversion. Older Master Craftsmans with the fish scaler might be finagled into taking the small Phillips in its place. Just exploring the possibilities.
Thanks for the pin information.