I love Tampa Tropical Asian Nursery but last I was there their Banana selection was pretty much the usual namwah, grand nain, etc and double mahoi.
I'll have to check out Jenes. I'm looking for a Kru and I know one place online but I was hoping to find one for less than $200 and also pick up a few others but it seems the closer I get to the last few varieties the harder it is to one stop shop, the Dwarf cuban red and pisang raja should be easier to source but I haven't been looking as hard as I was finishing my mango shopping.