I would choose Memorial Address, because it's the song that convinced me
Tsuki, don't feel bad about it, it's their loss.. Some people just don't understand Ayu. I remember I was watching an Ayu performance and my sister's boyfriend walked in, and when it was over he said "You actually listen to this music for fun?" I was offended too, but I guess some people just don't like Ayu (or Jpop, for that matter).
And my parents don't understand why I order Jpop online, or why they have to drive to a hard-to-find district in some German city to find a shop that's supposed to sell Jpop CDs. Luckily, they don't mind doing it