Par4QC They have even taken any thinking out of the equation for everyone, simplest irons you could build. No R, No S, No X flexes. Just......wedge!! For your wedges, dammit.
I remember Callaway's "Uniflex". I once asked a store owner what flex Uniflex was close to and he said "well, it's kinda between.......fuck, I don't know".
Backinit gave me a couple wedge shafts and some guy dropped of a brandnew Scratch 47 degree head here.
Some of them, supposedly, give a little more spin, like 300-600 RPM. I had gotten one of the XCaliber ones cheap when Maltby was blowing them out years ago. I put it in a lob wedge. I rarely hit full shots with it, so I don't notice a difference. The new Rapid Taper wedge shafts claim a 2000 RPM spin increase over steel wedge shafts.
I tried a couple of the Apollo hump shafts in a pair of wishon wedge heads on my last round of last year. The faces of the wedges had so many micro grooves that you could probably grind corns off with them. I didn't notice anything breathtaking with either. Not bad just not remarkable.
I always thought some could make a difference. The Wishon Hi-Flight was magic around the greens although useless with a fuller swing. Of course it seemed to be just a Dynalite shaft that was untipped.
The old DG Spinner did seem to give me more spin on full shots and I rarely spin ball.....except when I land it just short of the hole and spin it back 10-15 ft 
I have heavy 125-130g Accra shafts in my wedges now. No different, but I love the heft and shock dampening.
