Some of the best gear comes from pop (player owned ports). Tough ports armour has no damage bonus. Tetsu, seasinger, and death lotus, here's a link to ports guide and you can look up the armour from there, http://www.tip.it/runescape/pages/view/pop.htm. The next sets I would suggest to use is from Nex, you can go to http://www.tip.it/runescape/bestiary/view/1576-nex to view all the gear from Nex. These sets are Torva, Pernix, and Virtus. The armors from Nex all have damage bonuses, which do help, they each also have a pair of boots and gloves to complete the set. The ports sets do not have boots or gloves, only head, top, and bottom. Overall, ports takes some time to get, and gear from Nex is costly, but all of these armour sets do degrade. Hope this helps you out a bit.