Well, I'd just say everyone's opinions are different. ^^ And I personally thought that Ayumi's albumns were all good in different way. The albumns show her change of thoughts during the period of time. But I felt A Song For XX, LOVEppears, Duty, I am were all alittle too similiar. RAINBOW and Memorial Address sounded with a different style. RAINBOW, her vocals improved from high pitches to alittle lower with more control. And in Memorial Address, she did alright. But i think her upcoming songs are REALLY nice. Except during her lives, she over does the vibrating thing. XDD But otherwise I LOVE her new songs. Especially GAME. But that's not the point. i think her songs are indeed improving.