"To those who fell in love with you! For they have sacrificed so much for so little!"
Actually, it doesn't matter whether you use legs, helmet or shoulders (and possibly, not 100% sure, boots) as second piece since they all offer the same armor...IMO
Looks: Helm/Shoulders
Armor/Resistance: Chest/Legs
However, that being said, I've never noticed too much of a difference in damage mitigation from the amount of armor/resistance you get from the Chest/Legs combo, compared to Helm/Shoulders combo. As such, I tend to go more for that one as most medium Helm/Shoulder styles aren't particularly too attractive (imo).
]Actually, it doesn't matter whether you use legs, helmet or shoulders jand possibly , not 100% sure) as second piece since they all offer the same armor...