I currently have a mNB Argonian Tank that wears 5 Ebon, 5 Worm's Raiment, and 2 Lord Warden with my Ultimate as Aggressive Warhorn. (This guy is all about buffing the group!) He gets plenty of Warhorn uptime from using siphoning skills, potions, and heroic slash- so there's no need for Bloodspawn and Tava's Favor suggestions.

I was thinking of alternative pairings like Lunar Bastion as my heavy armor set with Sanctuary as a secondary. I'm pretty sure no one in a raid runs Sanctuary- but as an mNB Argonian tank... it seems like it would benefit the group as a whole. Lamia's Song also has an interesting 5pc Proc that would help the group. Perhaps even Twilight's Remedy... but I think the healer would be running that with Worm's Raiment or Spell Power Cure. I took a look at Healing Mage- that set looks like it would syngergize tremendously with a mNB tank using Sap Essence!!!

I've also tried different monster helm sets like Malubeth and Sentinel of Rkugamz (both are fantastic!) Any other suggestions for Monster Helms?

Feel free to post your experience with different pairings. Remember- this is for an Argonian mNB tank... so, keep those skills in mind.