It's really amazing that there's still such a fanbase for it, given that I read it when I was so young. Really has staying power.
The Fox Cub Bold was definitely my favourite book. I rented the others from the library but I bought that one (it's with Fox's Feud as well, which is my other favourite) because I loved it so much. Both of them are sad really. I remember being epically upset over what happened to Dreamer.