I think across Europe the International Baccalaureate Diploma Program is well regarded, though it limits your choices.
It is. From what I hear and have read, if you manage to finish it, you can go almost anywhere in Europe, and quite a few US Universities recognize it too, in addition for Australia and few Asiatic countries.
Though be warned: If you decide to go for it, it's IS going to be tough. I myself finished the pre-year in Finland now, and from what I have talked with students that have done the first/second year of the program year, well... It isn't going to be a walk in the park, to say it so. I think it will be worth it though, many more doors open for future studies compared to my other choices.
For foreign students this is excellent, especially if you are looking for to study in other countries. For example, our school have students from Russia, Germany, Norway, Estonia and Latvia in addition for Finnish students, and it's a relatively small school. I can't speak for other countries, but at least in Finland you can get decent monetary support for studying and living, which depends on your parents income, etc. Of course, you won't be able to wipe your ass with cash, but you will make it through, especially if your parents are willing to give you monetary support in addition to the fore-mentioned support.
If you are interested to search more about it, a couple of links for you:
Wiki on IBDP
Wiki on IB-Organisation
IB website