Do I like real bacon or imitation bacon?
Honestly, clones are just there to pad out the roster and don't take much development time, and are added later on a per desire basis long after the initial cast as been decided on at the beginning of development. You have your "semi-clones" like Luigi and Wolf who are only slightly similar to their base character who don't even classify as a clone. Then you have your regularly thought of clones that vary slightly in mechanics like Falco and Toon Link who play largely the same and have similar specials but differ on a few points, offering for a more subtle difference in playstyle.
Then you have Lucina, Dark Pit, and Dr. Mario who were meant to be alternate characters and have a couple of token differences that set them apart and thus get widespread, undue hatred.
I won't vote, because I like both. I like characters and big rosters.