There is lot of things that go in the growing hops - clima, soil, water conditions. For Sweden I would chose some not too bitter variety - Czech or German. But you have to look up what is available for you.

Saaz isn't boring, it's fantastic! "Noble" just refers to specific lineages of low-bitterness western European hops, it's basically a marketing term. It definitely doesn't mean that they're common or to be overlooked. In fact, if you're interested in brewing lagers like pilsners, Saaz would be the perfect choice.