Look at the crappy paint splattered all over many of the Severne Sails.
Would you really want to use their masts with a company that designs products like that?
They are more interested in trying to look good than improve performance (but they didn't realise it actually looks crappy as well).
I think you would be happy with the North, Gaastra or Maui Sails. The advantage of the Gaastra & Maui Sails is that you have a forum for support. Unfortunately no support with North except your local dealer who pretty much just has access to all the info that we read anyway - so it is not much help.