Second Labrador. Atlantic salmon, massive Brookies (got me some of those way back, when I worked in an iron ore mine in Fermont, Quebec). I would also put Iceland on my bucket list.NZ is a great choice, but you should wait until next winter which is their summer. I have fished South Island & had much success.
Also, consider one of the classic fly lodges in Labrador. It turned out to be a very expensive trip, but the huge Brookies made the trek worthwhile. I fished at 3 Rivers, but there are a number of lodges you can try
Finally, consider fishing for Atlantics in New Brunswick, or Gaspe Peninsula (The fish of a thousand casts, but hooking a 30lb Salmon that was in the Ocean 2 days before is a real experience)