So far I've got
20 mortek guard
Harvester
Arkhan
What would be your next purchase here?
Also, I'd like to add to the Katakros question - if I'm on a budget but can't decide between him (I'm painting my OBR in Praetorians purple) and Nagash, who should I go for...? Both have been hounded in the past for being overcosted, but more recently I'm seeing people report on how great they both are...