Khymeras. They're using the back end of the Steeds of Slaanesh and the front end of a Chaos Hound (I had 10 going spare). This means that i'll be using all of the stuff from the Seeker box, which means I can increase my Scourge squad to 10 men without wasting money.
More of the Cronos. The rear legs are done as i carved up my last Aethersail, so I can't finish my third Raider.