I must say sphynxmomma that I am totally with lizzieann on this one. I for a brief moment considered Mexico and then thought to myself; I don't speak fluent Spanish, their standards are considerably "different" than ours, you're a long way from home if something happens and medical bills can pile up in a hurry.
I suggest you talk to Natalie at Dr. Kirshenbaums office, she's a great lady and in fact has been banded by Dr. Kirshenbaum herself! You are also much closer to home, you speak the language and there isn't much of a cost difference.
In the end the decision is yours but make sure you do your homework!!