Thanks you guys :)

Here pics with the Alien CM

coole Pics Oktay:p......wenn ich bedenke was die Cinemaquette kostet kann man getrost zur Sideshow-Maquette greifen:D:thumb::pray:.......hab sie schon im Warenkorb.......noch ist die Macht mit mir und stark genug nicht auf den Kaufbutton zu klicken:rofl::rofl:

die Pose der Cinemaquette ist besser imho... ansonsten geht jeglicher Punkt an die Maquette finde ich... und das zu einem Drittel des Preises^^

I think both are great. The CM looks more like a creature while the SS looks like a guy in a suit. As you see, details are awesome on both.
CM has bigger head, upper body, arms and tail.
SS's hands are the same size as the CM!! Same for the tube on the back.

SS has bigger legs and smaller feet.

CM has a more accurate color IMO, but the color on SS is great too.
CM has a more aggressive look, thanks to sharper tooth.

Concerning the position, both have critics but i like them both.