Which Andre Norton book?

Which is your favourite Andre Norton book to read? Which of her novels or series would you recommend as a starting place?

I've always been a fan of her Westerns - Ride Proud, Rebel! and Rebel Spurs. I haven't read any of her science fiction books.

>3 MrAndrew: in another context someone just posted: "It's always nice to have a suggestion, so that you can do the complete opposite."

>4 MarthaJeanne: dogs bum lol. Not an Andre Norton book that I'm familiar with.

Ralestone Luck, Catseye, Crossroads of Time

I'd go with Star Guard