Swiss system - experienced it as a tourist. DH needed emergency surgery. Care was great, food was great, clearly significantly more money/beds/staff than we have in the NHS. Was free for us as travel insurance covered it. NHS did provide excellent surgical aftercare and physio when we came back to the UK.
Canada - have used the system there both as patient and physician. Massive waiting lists for secondary care (18 months or more) as GPs do far less chronic disease management and specialists work at a much lower intensity (I see 15 patients in a clinic in the NHS, average was 6-8 in Toronto as appointments were twice as long and there is no overbooking).
Very hard to actually get a GP as well, which meant that people who were less health-literate/engaged tended to present very late - these people tend to be on their GP’s radar in the Uk, if only to get access to other services.
Actual care once you were in the system was very similar to UK, both in terms of the physical environment, standard of treatment, and bedside manner.
Provincial healthcare is free to residents (paid by taxation) but doesn’t cover dental, drugs, physio, equipment like wheelchairs etc. So some of my patients were spending $200 per month on drugs, and lots more just weren’t taking them (many renal patients are on 10-15 medications to keep them alive). DH paid $80 for a week-long course of amoxicillin, would be £9 here.
Overall I think the average person gets a slightly better deal from the NHS, but not by a massive margin, and HCP working conditions were significantly better in Canada.