Sorry I missed your comment until now, Heldrak. Scale comparison is a tough issue to discuss in print, which is why I'd like to do it in pictures once I get my various issues with the MZD database sorted out. In brief I's say that they're substantially smaller than the Griffins in all dimensions, substantially shorter than the Cold Wars (which tend towards the tall and gangly), a bit smaller than Hasslefree's adventurers but not terribly so. Oh, and they're substantially bigger than the MegaMinis, which are the tiniest zeds in my collection. I hope that helps.
Do check out bandit's pics, they offer a pretty good comparison.