I( have a variety of cats. Variety is good!
Several of the cat's that I live with are Norwegian Forest cats (actually half that and half domestic shorthair). They are lovable, loving, calm, laid-back and just friendly as heck.
They have a sibling that is half Abyssinian. He has the same personality traits, though he is a little bit less affectionate, or at least he shows it less.
The best breed? Cat. Various.