Almost anything on October except Tomorrow (I loved that song initially). That was my first early U2 album to own after having AB, Zooropa, JT, and UF. I had hear songs from War via live recordings, but October was the first album I purchased of the first three. I think I was put off by the lack of a Sunday Bloody Sunday or New Years Day type song. I was also put off by songs like Scarlet, Is That All, and I Fall Down. The only songs I really liked were Tomorrow and October.
I think I shifted my views on the album after filling out their studio album discography (c. 1998) and becoming more aware of the message in the lyrics of October as well as becoming a huge fan of Boy. The final push came with obtaining the Fire single, which I just love. From that era, one of my favorite U2 songs of all is 11 O'Clock Tick Tock, and I regret that it never showed up as an album track. I think I would have fell in love with the album right away if that song would have been there to begin with.