[Chaosrocks]

I personnally would get extended carapace on the ground tyrant instead of warp field. That 6+ inv save isn't really worth the 10 extra points. In fact, he might not even need ext carapace due to the 3 gaurd. I also dont really see why he has the bone sword and lash whip. Since he's walkin seems to me another ranged weapon would be nicer, and catalyst isn't going to be helping anyone until he gets there.

I also wouldn't get both scuttlers and carapace on the stealers. I would say one or the other. With those points you could put toxin sacs on the hormagaunts or get more of them.

That's my opinion. Hope I could help.