Musa basjoo is ornamental only and some people actually dig up the bananas before frost hits and store them indoors, replanting again in the spring. It's all about that tropical look!
A lot of the banana plants sold in the US are from tissue cultures produced by one company (that I know of anyway) and TC plants are small and inexpensive and do well. So all those
ebay sellers offering tiny plants, those are really banana plants and they came from the same lab. HOWEVER you cannot be sure which variety it truly is, which is where integrity comes into the mix. This is for all bananas really, they are difficult to tell apart especially when small.
I like TC plants because they can be shipped and won't transport diseases. However if you have local nurseries that sell larger plants or a vibrant plant community in your area, that's good as well.
The big box stores occasionally carry banana plants and be careful because those nurseries (the ones on the tag) frequently have the wrong cultivar (Ice Cream/blue java is notorious for this) in their program.
At this point my favorite banana would be any one I could get to live through a 110 degree summer. People can do it here but I seem to be cursed. Mine rot at the base in the worst of the summer heat.
In Arizona the wisdom is to choose a stout variety like the Dwarf Namwah that makes a thick trunk and can handle winds and have enough structural integrity when they fruit to stay upright.