I only run one set on each variant of my character. Usually that is Monsterx2, Overland/dungeonx5 and Craftedx5.
Depends on the character of course but some of the overland sets I like are Hundings Rage, Mother's Sorrow, Necropotence, Spriggans, Spinners, Robes of the Hist, Warrior Poet.
Was wondering just how many players carry and why? I run a 5 and 5 light armor setup which works fine for how I play.