If you haven't gotten the chance to check out this kickstarter, please do. These "titans" and infantry are seriously awesome looking and most importantly plastic. I'm chipping in to get two of the crusader versions and one of the mortis along with some weapon variations.
Dreamforge Crusader & Infantry Kickstarter
The infantry are top notch. If we allowed more alternative miniatures I would be all over them, but I play in a lot of games workshop sanctioned events and at this point I don't need a ton of miniatures I can't use in games.