After months of research, including people's comments on this
Forum for the last year, I chose Cigna Global with a Medical
Evacuation add-on, for around $175 USD per month. I found it to
have lots of good qualities, although for that premium price,
it comes with a $10,000 deductible. You can get much lower
deductibles, for higher monthly premiums. If I left-off the
Medical Evac part, the policy would only be $100 USD/month.
(I'm 58 w/high blood-pressure, but no other medical issues.)
Hope that helps. The people I dealt with in Scotland, were awesome.
PM me if you want, and I'll point you in that direction.