Start with the sport you actually follow, rather than the biggest bonus you can find. If you mainly watch Eliteserien and the Premier League, bet builder and cash out matter more than a big bonus. Those are the features to look for first when you compare sites, before letting the bonus decide where you sign up.
If cross-country skiing and biathlon are your sports, check that winter sports are on the menu all winter. They are at Winsly, Monsino, Winzie, Quickz, Reblz and the rest of the top of the table. That is a more relevant starting point for you than comparing bonuses without checking whether the sportsbook covers what you follow.
Then look at what the bonus asks of you and how fast you get paid. I check the quoted terms against the bookmakers’ own pages, so you can compare the offer on its terms, not just its headline.
The table scores each bookmaker out of 10 on sports bonus, sportsbook and Norwegian sports, features, payouts and payments, and fit for Norway. Use those scores to compare the parts that matter to you. The form column gives you five things at a glance: live betting, cash out, bet builder, live streaming and a Norwegian-language site.
You will also meet the Norwegian search terms «bettingsider», meaning betting sites, «beste bettingsider», meaning best betting sites, «oddsbonus», meaning odds bonus, and «betting norge». Whatever term brings you to the table, keep the same order: your sport first, the features you want next, then the bonus requirements and payouts.