My general impression was that the UK was better, based on something I'd read. In doing a bit more digging, I realized that the Royal College makes a distinction based on where you might have done
post graduate training.
Jurisdiction Approved Training
So the trick is to do post-graduate work in the US, or one of the countries listed above; ie a residency.
I do think that there is much less of a stigma associated with European schools, which might help you if you're applying for a residency in Canada. I'm doing the Carib thing, and planning on applying to both US and Canadian residency programs.