I vote for potency first. Assault second and warfare last. Fury jewels first, nature jewels second and diamond last. Many threads about how armor can be nerfed by enemies but hit points can't. For example aimed shot lowers your armor. If you're lvl 57 plan on getting two sets of gear. One at level 58 and one at 60 or new gear from expansion. The two most expensive tiers now are lvl 57 and 61. With expansion around the corner I wouldn't get attached to whatever you buy. Personally I wouldn't even use jewels until you see what is available in this expansion. In general you want gear that boosts your primary stat and adds damage. In my opinion added int (mana) is more useful then dex (crit).