What do you choose, go to the cinema or go to the theatre?

That's a very good point. I agree with you and I think it's something people should keep in mind when deciding which accent to pick. Although I don't know about the specific example that you mentioned, I do think that with Portuguese the European accent is more natural for English speakers.  If you type in "boa noite" (goodnight) into google translate and listen to the computer pronounce it, you will see that it sounds much closer to the European Portuguese accent than the Brazilian. Of course, other things like a language/accent's phonology and intonation are more important than someone's first guess at pronouncing a foreign word.