Wow, that is a fantastic GMAT score for a 30+ year old person. I could not resist but comment on that - age slows us down a bit but you seem to be immune to some of that or just really good

I feel that since you are more mature and experienced, you want to the MBA that is right and delivers the right end result - you have traveled quite a bit it seems, you know what you want or at least know better than some 26 year-olds what you want, and you appear to know value of money.
Darden has a case-study based system just like HBS where your perspective and experience will come in very handy. (Hence the scholarship).
Tuck vs. LBS - Tuck is definitely many people's dream as an ideal tight-knit community (though it does disappoint some folks - even Tuck is not perfect).
I think one part you have to somewhat decide is whether you are planning to continue being an expat/live abroad or if you are willing to settle down somewhere. If you want to live abroad, or have a traveling lifestyle, then LBS of course. If you want to stick around the US, then Tuck or Darden and I can see how 50% scholarship for about 5-6 ranking slots is a great investment.
So instead of looking at schools pros and cons, consider your preferences long term and what you are planning on doing and where you are planning on living.
Congratulations!
BB