I am overdue for a replacement chain and cassette, I was thinking about upgrading to the PG-1070 cassette and the 1071 chain.

What link do I get, the 114L or 120L? I have a 2012 Vaya 2 55cm.

I've had it about a year, 3200 miles. I ride it year round in Chicago. Would I benefit from the upgrade, with longer wear? Or should I just stick to the stock because it'll get beat up anyway.