My favorite is Nicki of course, a (normal) female, the only snake I own. But my favorite future morph color is the high contrast albino. I think they are interesting and also beautiful and for my wife's sake would not be as intimidating as my Nicki is to her. I would pick a male because it would be smaller.
All the other morphs just don't matter to me or look the same as a normal or just look like a little different ball python. With 2 exceptions. The pied which are a white and the usual color mixed. Pied are my second favorite future choice and are also interesting and beautiful. The all white and the all black are cool but I wouldn't pay the money or find them more interesting than the albino's. I have my heart set on the albino high contrast ball pythons. ( Male preferred ) If I ever buy one more it would definitely by a high contrast Albino. Love em.