Of the six sources that I know of that list a height, they range from 14-25', so take your pick.

Thanks pitangadiego.
I just noticed that on one of that book's side notes(on side of pages) it says that Musa textilis can get up to 40 feet tall. Sounds like a nice substitute for ingens.

Their ultimate height will also be dictated by growing conditions too, to which both may likely respond to differently. Grow both and do a side-by-side comparison. I plan on getting both here too. Aaaaahhh, giant nannner plants, a lawn chair in their shade and some cool lemonade. :)

I was thinking banana daiquiri.