Hmmm... Here's my recommendation.
Studio Albums
FRIENDS (1992) (Mini album)
LOOSE (1995)
FRIENDS II (1996) (Mini album)
GREEN (2001)
MONSTER (2006)
ACTION (2007)
MAGIC (2009)
C'mon (2011)
Best Albums
B'z The Best ULTRA PLEASURE (2008)
B'z The Best ULTRA TREASURE (2008)
B'z The Best XXV 1988-1998 (2013)
B'z The Best XXV 1999-2012 (2013)
SONGS