Well I'm not saying the ones on LAD are bad. I just find Flight 666 to be a bit better. I suppose it's Bruce's improved vocals that make it better to me.
As far as the songs go, there aren't really any songs on either disc that make its album better. Actually, I'll just do this:
LAD
1: Flight of Icarus-I like that song too, but the live versions, not so much. Not just this one, but all of them. I didn't miss it in '05.
2: Running Free-Great if you're at the concert, but I'd rather be listening to Maiden play music, then Bruce talking to the crowd
3: Wrathchild-Overplayed.
4: 22 Acacia Avenue-This is actually a good one. I really enjoy this version.
5: Children of the Damned-I like the song, but in my opinion, there isn't anything special about this version.
6: Die With Your Boots On- Similar to Flight of Icarus, but I really liked seeing it in 03 and 05.
7: Phantom of the Opera-This one is good too, especially with Bruce's vocals and Adrian's addition and guitar solos.
Look, I have school so I'll finish this post later.