This discussion is interesting. I had always thought that flera was several and fler was more, and I came here to find out the difference between fler and mer. I had never known that fler is just a short form of flera...
Tangent off this: how do Swedes refer to cars by brand? (Probably also applies to other brands turned into nouns). Mainly gender, definite article, and pluralizing.
Ex: 'en' eller 'ett' Koenigsegg?
Saaben? Saabet? Annan?