I dont know if the Canadian, the British or even the German model are the best. But what is clear to me is that for profit insurance is a system that doesn't make sense. There should be a way to align the interests of both the organisation providing the service as and the individual using/paying for it. In the American model these two are completely opposite, which doesn't make sense in an inelastic market.

Maybe if that system had VERY strong economic regulations (like, the government would set prices for everything and let private carers compete in "value added".)