I am sure that your handsome plant is an aroid...and inclined to think that it is a philodendron. Tremendous variability in aroid leaves. Further than that, I am fully open to suggestion! Recommend this wonderful site to you: http://www.exoticrainforest.com/Grow or Growing Philodendrons.html
After looking at the pictures closer, I do think that you are right. I think that my new baby is a Xanadu! :) The Selloum has thicker stalks! This one is on the more "delicate" side :) Now to do some research on how to take care of her :)