I'll probably go with the first list, including the choir, and dropping either the vassal or Hierophant. My biggest concern is with my strategy. I plan to use this list to apply constant pressure to the enemy, forcing them to react to me until I strike. I have 4 striking options, with Rez and any of the 3 beatsticks. Also, any of these can be combined with other facets to make them more powerful. I also have 3 ways to slow or severly hurt units of infantry, so that problem is mitigated, somewhat.
Where I'm stuck is with the following question: I have narrowed it down to 3 options, and of these 3, I can take 2.
1. Choir and Hierophant: Protect my expensive 'jacks and give Rez' a boost in range and focus manip.
2. Choir and Vassal: Protect my expensive 'jacks and give one or two of them nasty surprise capability.
3. Vassal and Hierophant: Maximize my threat ability and tweak up Rez's combination range/ flexibility.
The Downsides...
1. Kind of limits me to a smaller radius than I'd like, if I want to protect my 'jacks.
2. Reznik is more limited in his ability to cast his all important assassination spells (Witch Hammer, Brand of Heresy, etc...)
3. Leaves my 'jacks vulnerable...
Hmmm... Decisions, decisions