I should look at the Clix guys, they might size up OK. The Predators should be about 7'-8' tall, right? I'll have to compare my Copplestone Preds to Riddick. I have most of them.
I think Andy's green for his Hurn looks better, though.
I might use SuperSystem, but it's more likely I would use Warengine (the old ShockForce rules); I like those a lot for Sci-Fi skirmish.
Thanks!
Scott