Shaman velius armor quests

[Lostfaction]

Looking at velius armor quests there appears to be 3 for shaman

Thurgadid armor
Kael armor
Skyshrine armor

Are these at all tiered? They seem relatively similar with only the dwarf armor possibly having lessor overall stats but otherwise very similar pieces

They also appear to have opposing faction requirements (giant, dwarf, or dragon)

Is the point to pick which one you want to go for and faction grind while hurting the opposing factions? I would assume depending on race certain ones are harder to grind faction for (dwarfs easier as barbarian, Giants easier as ogre maybe?)

Influencing which faction you chose would then open/close doors on other quests and npc target drops as well I would imagine. What's the best way to tackle velius?

I'm a barbarian shaman FYI