http://runescape.wikia.com/wiki/Armour#Armour_types
found this page on wiki really helpful with the levels needed and can click the gear link to look up price to see if you can afford it. Doesn't look like it was updated for the port gear (really decent level 85 gear that does not cost any money)
I also saw on the pages that the warpriest armour is is better than Obsidian equipment unless you are fighting in TzHaar City. (at least what i understood from it ) please correct me if I am wrong.( I am not that experienced in being able to afford the best gear the game has to offer)
It also think it depends on what you are fighting like if you need hybrid/all gear or normal combat gear.
also took these quotes from the wiki page for the ports rewards page
http://runescape.wikia.com/wiki/Player- ... rt/Rewards
"Tetsu armour is the best non-Dungeoneering melee Tank armour in the game, and the second best melee armour in the game, surpassed by Malevolent armour (However, Superior Tetsu armour has identical stats to their Malevolent counterparts). Tetsu armour requires level 85 Defence and Constitution to wear. Level 90 Smithing is required to make Tetsu armour. "
"Seasinger's robes are the second-best non-Dungeoneering magic armour in the game (surpassed by tectonic armour), although they are currently the best Tank armour for Magic. They requiring level 90 Runecrafting to make, and level 85 Defence and Constitution to wear."
"Death lotus armour is the second-best non-Dungeoneering ranged armour in the game, surpassed by sirenic armour, yet they are the best Tank armour for Ranged. Level 90 Crafting is required to make the armour, and it takes level 85 Defence and Constitution to wear. "