ULTRA BLUE easily. It is one of her most personal CDs, IMO (along with HEART STATION), and another strong point is the lyrics. She was so on-point with her lyric writing for this album. The melodies are some of my favorite as well. "This Is Love" is an awesome opener, and I also love the emotions in "BLUE". "Making Love" has some of her best melodies EVER, "One Night Magic" is fun, interesting, and actually has Hikki doing a DUET! "Wings" is gorgeous, and the singles are of course phenomenal, especially "Dareka No Negai Ga Kanau Koro."

HEART STATION and Distance are probably tied for second, because both of those albums feel like they have no fillers whatsoever. Every track is great. They're both very consistent and don't have any major weak points (yes, I even like Boku wa Kuma ). DEEP RIVER probably has her best singles, but the album tracks are a big snooze-fest for me. First Love is just not my style, either. So yeah