I've never advocated a single-payer system except to point out that the countries that have them tend to score better in overall health than we do. That being said, they don't rank the best, again according to the study results I'd seen. What DID come out as 'best' are models like France and Switzerland where you still have private insurance in addition to the public option. What many people don't know is that Switzerland converted from a system much like ours is now to their 'hybrid' system starting in 1994. Not all that long ago.

As an aside, I tried to read the document you referenced. Unfortunately, I can't seem to get at it - I keep getting DNS errors when trying.