Angelfish

[J Feez]

I'm trying to decide between a few different angelfish for my tank.
They are:

- Eibli Angelfish
- Coral Beauty
- Bicolour Angelfish
- Koran Angelfish
- Flame Angel

Now keep in mind that my tank is only 39 gallons. I do know that the Koran Angel's can get up to a foot in length (in the wild at least), but all three LFS that I visited today said that the Koran will actually remain quite small in my aquarium. Is this complete BS just so they can make a sale? Because if I could keep a Koran it would be a no brainer for me to get one. Next on my list is probably the Eibli. I've actually never seen one until today. They are a really neat looking fish. I haven't found much online about...well anything. Has anyone had any experience with them? Same questions for the other 3 fish. What would route would you go if you were in my position?

Thanks for your time everyone!

--- Joel