"The Idler Wheel..." is my favorite Fiona album by a long shot. Initially, it seemed strange, and is definitely less accessible than her other albums, but it has a certain rawness quality that I find intoxicating. You should definitely listen to it - just click on the Fiona icon in my sig!.
That's awesome, I just have her songs on iTunes. And yeah, HoL is definitely one of her best. I can't really decide what my favorite Kate album is, but the top four would probably be Hounds of Love, The Dreaming, The Sensual World, and Never for Ever. I'm also crazy about Aerial.
Do you also like Joanna Newsom, PJ Harvey, or Fiona Apple?