I'd love to see an edge cleaned up on one of those short-cuts with their (non-stock) 320 grit wheel--seems like everyone runs them with the 120 which leaves a good printing edge, but as tony mentioned, much more surface area, and much more susceptible to solvent attack.
I started cleaning up my manual blades with just a sanding block and 320 grit wet dry sandpaper with a bit of rubbing alcohol on it--works wonders for an aging blade, especially if you just wipe them down right away and don't have to use press wash on them. Although I'm still curious as to whether or not those fancy diamond hand polishers are worth the three hundred bucks or so they go for... anyone tried one?