What I'm saying about the best medical professionals is not based on price, I agree that's rarely a good proxy for quality.
I'm referring to generally accepted concensus stemming from outcomes based peer reviewed findings, investment in research and innovation and medical tourism for critical and life saving procedures or care.
There's a reason that wealthy individuals, royalty, athletes and celebrities from around the world become medical tourists in the States. Anecdotally, I know a number of dual British and Canadian citizens who have opted to pay more for US heathcare.
I'm happy to have a discussion about equity in access to healthcare. Canada's healthcare system is much more equitable. However, if you're not able to acknowledge that GLOBALLY the absolute highest standard of care, even if only at the extremes for rare diseases and cutting edge treatment, exists in the United States then we cannot begin to discuss which system is "better." Furthermore, socialized medicine and particularly Canada (because of geographic proximity), have immeasurable benefit from the free-ish market that exists in the USA (and to some extent France, Germany and Israel). I'm not sure socialized medicine globally would be able to exist without being able to piggy back on capitalistic healthcare. Essentially you are a socialized "zone" within a system that's overall very capitalistic.