I don’t like eating regular bananas either (got indigestion if they aren’t ripe enough). I use ripened Asian bananas and they taste much better. They would look old, spotted, ready to be thrown away but once peeled, they looked perfect, tasted so sweet, not mushy at all and never gave me the indigestion feeling. I buy them green or yellow with spots when available and use them when they ripened well

you can tell its there but it doesn’t taste like banana it makes it thicker and I usually add one if I think the smoothie is too fruity

I like to add a little greek yogurt in it’s place or additional frozen fruit!

Whatever you like or have on hand. I typically use full fat.