I got a Warthog and some extra Spartans. They really aren't that bad, but the pieces don't quite line up right (they are Mega Bloks, after all). I'm probably going to glue the pieces of the Warthog and turret together.
The Spartans themselves aren't too badly made. Or the ones I got, at least. The Covenant Elites are a little wonky, though. Their legs are kind of funny to work with. They're kind of a pain in the ass to use as units, unless you stick them on a 2*3 plate.
*raises flame shield*