I doubt there is anyone on this forum who would believe that our delivery of health care is perfect. The question is really what can we do to improve what we've got without breaking the bank.
The USPS model tells us a lot. USPS is required to provide 44-cent letters to everyone. For those who can afford it, there is fax, email, USPS Overnight Service, Fed Ex, etc. Everyone gets the basic service, but not everyone can afford the "premium" services. Because of the basic requirement of affordable "basic" service, the USPS probably sustains a loss on that. (other factors enter into the loss, as well)
I think that it is also simply realistic to accept that we will never be able to totally equalize the same level of health care for everyone. As mentioned before, those with more wealth will always have a capability to purchase more & better care than those with more limited means. That applies to all the things we consume, from food to cars to homes.
The accessability to the very best health care follows that same pattern even in those countries which have attempted to provide equal care to everyone. Those that can afford better care can afford to go somewhere to purchase what their own country cannot provide for them, even if it means going outside of their own country.
It matters not whether the we favor R or D. Numbers don't "rationalize" the way the politicos do I favor whoever will face the numbers, and get the best bang for the buck.