Welcome to U2Start
Why don't you do a little introduction about yourself over on THIS forum. A little tradition we have and gives everyone a chance to welcome you.
Reference your question, you can always get an idea of what's popular by looking on the main BOOTLEG page under "most downloaded bootlegs" and "favourite bootlegs of users". That's pretty much a guarantee of a good show, we're very discerning listeners here!
Also have a look at these topics previously discussed:-
Best Popmart
Best Point Depot (Lovetown)
Favourite live show
ZooTV Legs 1 & 2
Just one boot from every tour?
Best Vertigo Bootleg?
Elevation Tour soundboard recordings
And for a decent summary of each tour, these are hard to beat (thanks Spiral
):-Elevation Tour
Popmart Tour
Vertigo Tour Rarities
Joshua Tree Tour
Unforgettable Fire Tour
Zoo TV Tours
Not live material, but interesting anyway is this Megamix
If you ever want to look for an older topic, the SEARCH function is a great place to start.
Hope this helps