Hi,
I bought some MBT's lately. Its too early to say if they do all they're supposed to, however I will say this, they are THE most comfortable shoe I've ever worn. I am officially a high heel convert and would wear them all the time if I could.
Just one more thing - don't buy a pair from a website. You must be properly fitted for these. I normally take a size 6 shoe and my MBT size is 37 2/3 (just less than a size 5). Seemingly its imperative that you have a good snug fit.
Happy shopping!
You comment re: Size. I got fitted for MBTs recently. I normally wear 37 in a shoe but my MBTs are 38 2/3. That's the opposite to you?