I'm in a 8a/8b border area.
The best things I have going in my garden by far are the blackberries - PrimeArk45 variety is very vigorous, makes large fruit, and has the added bonus of a second small spread out Fall crop. My son and I are going out a picking a few berries off one plant every morning and afternoon. The PrimeArk Freedom variety doesn't seem to be producing a second crop, but it is thornless.
Bananas are good too with some protection. My bananas are planted along a privacy fence. Harvested 30 Orinoco bananas the other day. They were good. Dwarf Namwah and Raja Puri are flowering now, but it's probably too late in the year to ripen those fruit.
Lasr year, I had a possum purple passion fruit vine that grew from 2' or so when I planted it in the spring to about 16' wide by the fall. Made about 80 fruit, but they didn't have enough time to ripen them all. They were still good though. I didn't protect it during the winter and lost it to a late frost, so I'm having to try again. But seemed easy enough to grow and the fruits were really good.