I think my favourite album is Remedy Lane... it's the most intimate and personal of all their albums, but I still do love The Perfect Element Pt.1.
I couldn't get into BE when I first heard it. After a few listens I really liked it... It would be one of my favourites by them, but their entire discography is so good it makes it hard to choose favourites. The concept of BE is very intriguing and thought-provoking but verges on being pretentious (a lot of Prog. bands get tagged with that term, unfairly I might add). My favourite song by them is Iter Impius...