oh man, i love stuff like this, i'd definitely have to go with Even Better Than The Real Thing for the b-sides
1. EBTTRT
2. Salome
3. Where Did it All Go Wrong
4. Lady with the Spinning Head (extended dance mix)
but the BEST U2 SINGLE EVER, and this is an absolute fact, and if you dont own it you dont deserve to live (OK, i went overboard, but really, it is that good) is the Please single. Especially the one with the edited single version of please PLUS the 4 live tracks. Running at around 30 minutes (dont know the exact time off the top of my head) this single is more of an EP that WAIA, and should have been promoted more. Anyway, this disc includes some of U2's most stuning live performances, and the single verison of Please blows the POP version out of the water. here's the tracklisting for the poor souls who do not own this single.
1.Please (single verison)
2.Please (live, this is simply amazing)
3.Where the Streets Have No Name (live, possibly the best recorded veriosn of Streets, maybe aside form the Boston version)
4. With or Without You (live, the weakest on this disc, but still great.)
5. Staring at the sun (live, the definitive verison of this track, all acoustic)
so there you have it. Please is the mother of all singles, possibly the best deal you can get if you find it for like 6 or 7 bucks somewhere. And as far as studio b-sides go, Even Better Then The Real thing gets my vote.
Cheers.