Previous posters have covered the gear requirements but on occasion the Buccaneer's Shirt is the best piece for mdef if you're distance tanking dodore or goblin. The small pdef lost from using the shirt over the iron plate won't matter. As the previous poster said if you don't have emulate (r40 thm) if might be better to invest in more HP. Honestly I haven't tanked dodore since the nerf, but previously eating 4-5 shadowsears in an instant without emulate would mean death.