Thanks for the response! And yes, I'm very into football, but I support the best team of the country, FCPorto obviously! ahaha
Anyway, I also share your opinion that Scotland is a great place to study in, and I've heard that the social life and just the environment is just awesome!
I have indeed been looking at all those universities that you've mentioned and I am highly considering applying to most of them.
I have contacted Heriot-Watt though, and unfortunately they apparently require 29 points and Maths at Higher Level (which I don't do simply because it's way too advanced for an economics course in my opinion).
St. Andrews requires a high amount of points (38), and for me its too much for an economics course.
I'm applying for both Edinburgh and Glasgow because many people have told me that it's worth it due to the good solid courses they offer.
Moreover, i'm applying to Dundee and Stirling, the latter being a "safe" choice for me.
Thanks for the answer and keep them coming!