This is what I have painted so far of my Soul Drinkers. They allow me to play them pre and soon post Heresy.
2 Librarians
1 Chaplain
1 Tech Marine
4 Apothecaries
1 Land Raider
2 Predators
3 Rhinos/Razor Backs
2 Dreadnoughts
5 Sternguard Veterans
10 Terminators
40 Tactical Marines
30 Assault Marines
20 Close Combat Scouts
10 Snipers Scouts
131 Models