I'm looking for a medium sized, good tasting avocado for zone 9b. I hear Knowles (Nowles?) is a good fit, but I'm having a hell of a time finding any info or sources for it. I understand Fuerte is the standard B type, but it looks as if it's a pretty large tree...

So, I'm wondering if anyone has a suggestion for an easier-to-find type B, or a good source for the Knowles variety.

Really appreciate any help you can provide!