I'm trying to remember if I've ever tried a banana flavored liquid. I don't think so. I know I've never bought any banana flavorings except banana nut bread and I just didn't get much flavor from it.
For whatever reason, SO FAR, it's been the only flavor I can vape all day. I've probably tried 6-9 store bought. If they were too tart, Perfumie, or faint, I would give them away. So obviously my first DIY attempts will be to perfect my own banana. I like other fruits, strawberry is good, but it usually has a sweeter taste, and I end up going back to banana. I like to EAT bananas, but other fruits I like to eat, were never my favorites to Vape, like Apple. One of those weird things I guess.
As a former smoker, early on, I tried some tobacco flavors, hated them, decided I wanted no reminder of the tobacco taste, and have not vaped it since.