The migration of the board has broken the comparison threads, and the pendraken website doesn't have any pictures on it. Can anyone either post or google me some pics of the pendraken aliens and starship troopers models next to some epic infantry to gauge size difference? I'm wondering if these would work for genestealers/warriors/hive tyrants next to DRM Skythe for smaller inf

Yes, they work fairly well -- the medium aliens might be slightly large for genestealers. I think they make good lictors or Xoanthropes. THe small guys are pretty good for inf-sized, also check out khurasan miniatures.