• Liner Notes for A Sides
• Liner Notes for B Sides
• DVD History Mix Liner Notes
• Other CD Notes

Under the terms of the contract for the Best Of albums, which is separate from U2's album contract, these compilations have to be released under the Island label worldwide.  This is the case even in the US, where the band is signed to Interscope.

Due to elevated prices on domestic CDs, and the fact that it is often cheaper to buy imports, an additional bonus track was added in some regions to make the domestic version more attractive.  For this compilation, the bonus track is "The Fly" and it was added in both the UK and in Japan, and it was added to the end of the first disc of the set.  Unlike the A-Sides version released a week later, the extended set was only made available in CD format.

Several differences have been noted between the tracks on this compilation and the various versions that had been released prior:

Miss Sarajevo: This is not the album version, nor the single version.  This is the radio edit version previously found on only promotional singles of Miss Sarajevo. 
Mysterious Ways: There is an alternate vocal in this version of the track. At 1:35 min the line 'She's the wave, she turns the tide, she sees the man inside the child' has been changed to 'She's the wave, she'll turn the tide, and no question, she knows why.' Likely mastered from a different vocal track. 
Numb, Discotheque, Staring at the Sun, and Gone: All are new mixes of these tracks done specifically for this compilation. Gone also features a slightly different lyrical track from the original version.  In the Best of version the line "What you thought was freedom just was greed" is different from the original "What you thought was freedom is just greed". 
Salome (Zooromancer Remix): This is an edit of the previous versions of this track. The original mix was 8:02 in length.  This version is 5:50 in length. 
Numb (Gimme Some More Dignity Remix): This is an edit of the previous available versions. Previous available versions of the mix were 8:11 and 8:47, this version is 5:50. 
Discotheque (Hexidecimal Mix): Another edit of the original remix. The original was 7:21, a test pressing only edit was approximately 4:00, this version is new at 5:45.