^Totally agreed!
Berryz hardly ever get a weak b-side, but their best ones would be: Suhada Pichipichi, Kaccho e, Passion E-CHA E-CHA & Koishiteiru Toki.
MM's best ones would be Odore! Moring Curry, Fine Emotion and Koi wa Hassou. And also the very old-school Tatoeba *__*