My ropes are embarrassingly old and I'm having some trouble making a decision on new ones. They would be primarily used on long multi pitch routes in northern Norway, with long approaches etc and for winter trips skiing/climbing. And quite often climbing as a three.
What I'm stuck between is triple rated or half ropes, some super skinny and light half ropes sound appealing for the weight saving, but I don't have experience with super skinny and not sure how durable they would be, or how safe an 8mm line would be for a second on one strand, considering rough granite edges.
Would a triple rated rope and a half rope allow lots of flexibility for what you want to do? Personally, I find that skinny ropes have their place but are often more difficult to handle in cold / winter conditions and tend to wear far more quickly in an alpine environment.