Kathleen,
Depending how several factors your choices are pretty good. I live in 7a/b and grow several varieties. If you have plenty of room and not looking for fruit, Musa basjoo is a great choice. If you are limited for space, their are several hardy smaller bananas that would work. I think you would be happy with Musa velutina, Musa ornata. Here is a pic of some basjoos growing in 7a/b.
