well - ive basically got 1 of every board revision US snes now, and they all work now. add in a couple superfamicoms, a pal snes and an snes mini too.
its not that i wanted so many, but i basically found that they dont sell well. Im basically using the others for case parts for 1-chips in case i get one with a smashed top, or worse get one that someone who didnt have a gamebit and decided it was too expensive pried apart.
i dont know if you noticed but the snes is my favorite system along with neo geo.
this was a clean system.
thats what happens when you dont use enough packing.