I didn't think there was a need to start a new Furminator thread, so I'm posting here.
I got a Furminator yesterday and tried it with Millie. Of course the blades are sort of harsh so you don't use it like a regular brush (ie. letting the bristles brush the skin), but it was great, I got so much fur off. I didn't want to spend over $30 for a brush, but I'm glad I got it. It doesn't work on Lucy with her short, sleek single coat, but it's fabulous for Millie.