I have an enhanced Amora OEC in a 9mm size. I LOVE it! I've never seen an unenhanced in person, but I just didn't want to chance having my engagement ring show green at all. I've seen the green in other moissanites.
In all of my other jewelry I will be getting unenhanced, though. If I were you, I would buy the unenhanced and see if you love and (test it's color out in many lights) and if you don't, send it back and get the Amora
it'll be a win-win!