symphony of blades to support group sustain is the best choice IMO.
you cant get the buff, but it will only go to the player who needs it (like earthgore).
lord warden and bloodspawn are good in some situations, but i use symphony 99.997% of the time.
PS4 NA
all characters are members of the ebonheart pact master race
BLOOD FOR THE PACT
main character:
Rebekah Straight-Fire, breton templar healer: THE FATEBRINGER (dungeons, trials, pvp)
—MERIDIA’S LUSTRANT— 1100+CP; alliance rank 21 (major grade 1); Rebekah is the most devoted and loyal follower of the lady of infinite energies and the highest ascendant of meridia’s purified legion and was forged from meridia’s brilliant radiance of purity.
other meta toons-
Alexa Straight-Fire, breton warden healer: THE ALCHEMIST (dungeons, trials)
Sasha Straight-Fire, nord dragonknight tank: THE UNBREAKABLE (dungeons, trials)
Freyja Straight-Fire, nord warden tank: THE ICEBERG (dungeons, trials)
Ororo Straight-Fire, dark elf magsorc: THE SHOCKWAVE (dungeons, trials)
Michonne Straight-Fire, redguard stamDK: THE EVISCERATOR (dungeons, trials)
just for fun toons-
Rhea Straight-Fire, wood elf warden stam healer: THE RANGER
Shiva Straight-Fire, high elf warden ice mage: THE CRYOMANCER
Morgana Straight-Fire, dark elf necromancer solo play: THE DEATHSINGER
Lucille Straight-Fire, dark elf nightblade solo play: THE VOIDWALKER
Diana Straight-Fire, nord templar tank: THE CLERIC
Falsetto Straight-Fire, orc stamsorc werewolf: THE THUNDERHOWL
I think Chudan is redundant with Balance or Hardened Armor. Symphony and Stonekeeper are both going to be nerfed. There's no clear winner and the helm set you use will change from fight to fight based on the need. Good choices will remain Lord Warden, Earthgore, Vykosa (when you take very high damage), Symphony. Just make sure to slot and use a group heal to proc the set (if a heal based proc set).
EDIT: Tremorscale may become a good choice as well. More physical pen means stam DPS can spec less into Piercing and more into damage boosters.