Ultos set is still insane. Tankiness, OA, attack speed, physical->lightning conversion, allows you to overcap all of the most important skills… Just sick.
Iskandra less insane now, but the 3 piece bonus is still amazing. Offensively, the set is pretty bad even though it significantly buffs all the good damage types. It doesn’t seem to know what it wants to do. Amulet seems to be made for an elemental melee char. Book give s a ton of cast speed (which Arcanist doesn’t need) and even more bonuses to IEE, which is useless for pure casters. The rest are great for tanking up your caster, which is 100% required for safely clearing endgame content.
DM got nerfed in the right place (the procs were broken), but it didn’t get the appropriate buffs (everything except the procs sucks). Cold+pierce is an awful combination, pierce+physical or cold+acid are typical builds, which means this set will not be particularly good for any spec. It severely lacks poison and aether resistance to the point where it’s unusable unless you only use it for farming Fabius.
Markovian gives a lot of tankiness and allows for a 24/7 Overguard, but otherwise it’s complete trash. The main problem is lack of any OA on the set. Compare to Ultos, which also gives a ton of physical resist, health and other goodies. You will probably never die wearing this set, but you will not kill anything either.
Ulzuin has the worst weapon in the game and an amulet that doesn’t give damage conversion for some reason. Chest and hat are amazing. Fire+lightning is a sensible damage combination, but the skill bonuses on everything but the shoulders suck.
Dreeg is poor, but there is nothing much better for what it does. Amulet is trash. Dagger needs obscene amounts of cunning to equip, which is nonsense since it’s a caster set. Poison + vitality/chaos is a good damage combo, and it allows you to overcap skills in the DEE tree, but defensively it’s beyond awful. Poison resist is wasted, aether is completely missing. No physical resistance or DA iirc. It should be more like Iskandra in that regard, because right now Sorc dominates over WH as a spam caster simply due to being able to tank everything in the lategame.