Some comments for Ireland, to answer some of the above, and some things not in, that might be helpful to you:
I would say from a student perspective, the healthcare system is good in Ireland. On the patient side though waiting lists are longer than they should be, and there is a public/private split which is a bit against the grain if a socialist medicine advocate.
Incidentally, a Trinity med student did go to Africa a few years back for elective and got sick there and passed--very tragic. Electives are laid out in advance with the schools' partners abroad. I can't think of UCD's off the bat right now--Kansas? Kentucky? and I believe Pennsylvania. These are usually done in the summer. Most folks make their own electives abroad, either at a place they want to work, a specialty center, or they have a relative in America in that city. The preclinical years have healthy summer breaks so there is plenty of time for abroad, research, etc in there to round out your training.
Here is the timeline of what you will be doing:
Year 1/2 (Combined)->Work very hard as doing 1st&2nd years together
Year 3->Reasonable workload
Year 4->Reasonable/light workload
Year 5->Res year: light: all have to do is watch/do and learn.
Year 6->Hard: final year: not much time as doing rotations and your interviews for residency.
In the summer before you come, I'd recommend getting a Moore's anatomy and at least glancing it through while you enjoy your summer. Irish medicine is medicine and surgery, so anatomy has a heavy time weighting since surgery is heavily time weighted in the clinical years.
Housing prices in Dublin have started the turn. The economy, due to the tech, is very strong, but it will eventually follow Silicon Valley's slide in housing costs.
If internet savvy enough to be on this board, internet savvy enough to track down some Irish grads and see where they went. Try some advanced altavista queries with 'MB BCh BAO' and some filters to find some where you live, to talk with. This is the Irish triple degree: medicine/surgery/obstetrics.
For licensing exams, the odd one didn't get through either not studying for the exam, or got an exam that was weighted very heavy on one subject that they were weak on. 1 or 2 are still waiting, but seems its going to end up about 90-95% of North Americans got through on first crack, some high results, some low, with the average seemed to average a bit higher than the overall mean for that test. Canadians will be writing theirs next year. There is no licensing exam equivalent in Ireland--tested orally at the end of each term to assess skill.
Last year there were 5 americans in the class. All matched. 2 had offers beforehand and turned them down.
I'd recommend coming to Ireland personally for a tour of the city, the university, and the hospital you are thinking of attending. Airfare is low currently and worthwhile to make an informed decision before spending 5 years of your life somewhere.
Best wishes, roo