So yeah I checked out Opheliac a couple of weeks ago because Zander wouldn't shut the hell up about her music, and absolutely loved it right away! Such a diverse and exciting album, and her vocals are not just amazing but are great in a number of different styles and techniques. A really amazing musician.
So yeah, that's my favourite of hers, but I've been listening to Enchant as well, which is really nice, as well as a load of other songs (like the second disc of Opheliac and most of A Bit O' This And That) and she has just so much amazing stuff. <3