There is several comments above suggesting Norwegian is "sub-ryanair". A word of caution, using a forum as a tool to weigh up different companies is probably not the best method. Personally I would regard the rates of attrition as a better indicator tool.
For Norwegians reputation to be as low as some people are suggesting goes to show just how poorly management have handled and communicated on some recent issues. They can only blame themselves if they do not attract quality candidates for interview next year. They must improve. In my opinion, Norwegian is a better place to work and Norwegian offer their pilots better longterm prospects.
Yes, Norwegian like all airlines has issues. However Norwegian, or at least their agency, has recently recognised BALPA and is about to start talks with SEPLA. The company fights with unions, like most companies do, but they have not point blank refused to deal with unions. BALPA reps have not been mistreated for putting their name beside the union badge and several have now in fact got line training captain positions. The path is now paved for future issues to at least be discussed in a meaningful way.
Personally I see more light at the end of the Norwegian tunnel then I see at the end of the Ryanair tunnel. All just my humble opinion
And each individual will have their own views and requirements.
"Sub-Easyjet" perhaps!