Even though I've been pointing out some of the flaws in certain breeds, like the short short lifespan of berners, I have to say you should get whatever breed your heart is set on. You're an experienced dog owner and obviously dedicated to owning a dog since you're on this site whereas most dog owners aren't actively involved in the world of pets, they just own one. I think you could get past the hurdles of any breed and make it work. Also remember that while generalizations of each breed are based in truth, like malamutes being bad off leash, they aren't set in stone. My friend owns a greyhound who's off-leash trained pretty well. I think most greyhound owners would faint at the thought.