I'm in 9a and planted a Summer Banana and a Horse this winter. I've been told they'll do well here, but I can't yet confirm that. I bought them from Century Farm Orchards. My fingers are crossed for success.
I am in zone 8b and currently have a Golden Delicious and a Crabapple. I have the crabapple because it's such a good variety for cross-pollination. I'd also like to use it for apple cider vinegar and pectin production once it starts setting fruit.
I am hoping to get an Anna and a Fuji soon. Those are both low-chill hours requirements.