Singapore has some of the world's strongest laws protecting investors, lenders and borrowers. Setting up a company there only takes 4 days. It has very low and easy to file taxes and pretty much everything they do they do it with a "high-tech" view point.
Norway is just generally all around awesome. The only draw back is their high taxes but they're ridiculously easy to file as well. They also protect their investors, lenders and borrowers very well.
Denmark's economy makes it so starting up a business costs pretty much nothing and registering it is almost as fast as Singapore. They also hire and fire laws similar to those in the US so that you can pretty much hire and fire people very easily with no hassle.
Also, I just love the Nordic culture and way of life which is a big factor for me in picking Norway and Denmark.