Same here. A couple months back, I found two Diana Krall DVD-As for $15 CND apiece, and I came very close to buying both. But I figured that I wanted to hear it first, and not go by recommendations alone. I went home, checked out her website, and streamed a bunch of her songs. Great voice, no question, but the songs just didn't do anything for me. So I'm glad I skipped that purchase. Saved myself $30 plus our ridiculous Canadian tax.
cheers,
supervij
EDIT: Just saw your post, Tom. I love Kate Bush immensely, except for the first couple albums -- her voice is a little too "Minnie Mouse" for my ears. Her later albums are just gorgeous. Hounds of Love is still my favourite, followed closely by The Sensual World. Would love to hear those two albums remixed in 5.1! I'm still figuring out Aerial, so I don't have an opinion yet. Tori Amos is almost as good, but she became really self-indulgent after her first couple albums. After that, she became very unlistenable, to my taste.