He's got exceptional taste when it comes to guitars. Obviously his Explorer has that absolutely amazing sound that you just can't find anywhere else. But he was one of the people who for me influenced me enough with the Rickenbacker to order one.
It's hard to keep track of which songs he uses them on, because he switches around from time to time (i.e. on the Vertigo Milan video you can see he uses a Strat for All I Want Is You but then used a Gretsch Country Gentleman at the Buenos Aires show. Also With or Without You seems to be played with a different guitar each tour).
Anyone who wants to know about Edges guitars,effects or amps should visit www.u2-atomic-gear.tripod.com/index.html it has all of the bands gear listed with photo's of most of there gaer as well.You can spend hours in there.