This is for anybody that has wondered 'which is bigger?" Well here you go, at first glance the type I appears to be bigger as it is a bit taller. The type II looks to be broader but doesn't have the high profile as the type I.
The type II has a lot more surface area. More like a puffed out cobra (snake not the model).
The type I weighs more though, early forgeworld models have big resin parts.