Dusk shroud,scarab husk,wyrmhide,archon plate,wire fleece,great hauberk are the armors with the highest resale value. Archon has by far the best defense for strength requirement rate, and resale value,of course. Dusk is probably the second best usually... Duress though,is a melee armor, and these can still be traded even if they are made in heavier armors...But still the aforementioned are the best imo.