Ed, have you tried a Selle Italia Flite? Those and stripped SLR are my perfect saddle, just wondering as I don't get on with the same saddles as you, i.e. Rolls, B17...
I don't get on with the Charge Spoon either, but I've never tried a Knife so can't compare the two.
I've got a Flite and boy is that a saddle. Watch the angle though or your balls will tingle.
I've got a Flite and boy is that a saddle. Watch the angle though or your balls will tingle.