Hist bark is one of the most popular tanking sets and with good reason, a free major evasion while block? heck yea! But there are alternatives. The Brands of Imperium Set I have seen has become something people want or at least test out. It has a 6% when hit to grant you and nearby allies a 12k dmg shield(if gold v16) for 8s and has a 15s cd. I could also recommend Whitestrakes Retribution, if your health falls below 30% you get a 9k dmg shield(if white v16) for 8s with a 15cd, difference is that its more situational. Getting the Whitestrakes is great if you take a few larges hits, gives your healer a bit more time yo heal you back up. I have also seen people use Armor Master, gives good HP and Resistance when you got a Armor ability slotted and or used. Try em all out see what you like.
Armor Master is really great. Evasion + the effect pretty much ensures you are mitigating as much damage as possible, and lets you concentrate on other bonuses elsewhere. I prefer it to Hist Bark because although it requires an armor skill to be used regularly, it doesn't rely on an action that negates Stamina regen to achieve its purpose, and offers better total mitigation for many builds, assuming you use Evasion. If you don't like the idea of slotting and using Evasion, Hist Bark might be a better choice, however.
Dont forget that to proc armor master u use preciuos resources, hist bark offers evasion for free. Pair it with the old footman enchanted block cost reductiuon(12%mittigation is unbeatable)and u have a goot tanking set. I did speeruns on vwgt , vet prisson, hardmodes and it works great
Good tanks will wear 3 agility, 5 hunding's 2 new maelstrom pieces and 1 piece kena and a 1 piece health monster set. Tanks who can also do DPS are always going to be the best tanks, especially when they throw in a vigor and don't lose taunt.