Another one you might like to try: Tamariz's "Neither Blind Nor Stupid" (taught in Giobbi's "Card College Light") also ends with the red and black cards separated.
U F Grant's Nu Way Out of This World is one of the best impromptu versions of OOTW. It can be found here for $3: http://www.lybrary.com/nu-way-out-of-this-world-p-3146.html
There's a very similar version in "World's Best Card Tricks" by Bob Longe.