Despite their similarities to the Grey Knights, the combat doctrine of the Exorcists differs greatly. Unlike the Grey Knights, the Exorcists possess no special resources other than hardened resolve to fight the Daemonic, and are more strategically flexible due to their adherence to the Codex Astartes. They are known for their effective reconnaissance and large use of Scouts, deploying them behind enemy lines to collect intelligence. Indeed, many of these Scouts undertake combat duties that would normally be reserved to fully fledged battle-brothers. A favoured tactic is to work neophyte forces into positions where they appear vulnerable and then reveal them, drawing out the enemy by giving them a false sense of tactical advantage before crushing their advances with the full weight of the Exorcists’ main force. Since the introduction of Primaris Space Marines, they have made great use of Vanguard formations such as the 10th Company "Hexbreakers" .  

Robbie Macniven has done an amazing job of writing about the Exorcists Hexbreakers in Oath of Damnation. Following recently promoted Almoner-Lieutenant Daggan Zaidu (show above in the cover art) on a Crucial Mission for Exorcists. I really need to make a version of him. 

So as Metal Head Armory  begins to move toward starting a campaign/ crusade/ linked games, I am leaning towards either Enochian Guard, 1st company detachment, or Hexbreakers, 10th company for my starting 1000 pts.

Enochian Guard

1st Company Task Force

Captain in Terminator Armor (Warlord)

Librarian in Terminator Armor

Brutalis Dreadnought

Scout Squad (5 man)

Scout Squad (5 man)

Terminator Assault Squad (5 man)

Terminator Squad (5 man)

Terminator Squad (5 man)

vs. 

Hexbreakers

Vanguard Spearhead

Lieutenant in Reiver Armour (Warlord)

Librarian in Phobos Armour

Lieutenant in Phobos Armour

Lieutenant with Combi-Weapon

Eliminator Squad (3 man)

Eliminator Squad (3 man)

Incursor Squad (5 man)

Infiltrator Squad (5 man)

Infiltrator Squad (5 man)

Reiver Squad (5 man)

Scout Squad (5 man)

Scout Squad (5 man)

Suppressor Squad (3 man)

I am really leaning towards the Hexbreakers, but with the Call to Arms 2025- Astartes Stronghold opening soon I have a ton to build for Hexbreakers compared to the Enochian Guard but lots to build for my Exorcists as it is.