Well, the one I have is kind of hard to explain, (manufacturer unknown), but it is aluminum, and the arms on it are VERY close together, which makes me think that if I were standing on the hard behind the boat, I could grasp the motor, and twist it like a pretzel. It's never given me any trouble per-se, it just looks flimsy. And it being the difference between loosing motor in the water or not.
The handle on the top is a VERY important feature. Another reason that I don't like mine, but that is the deciding factor in whether you can get the motor up and down. My handle reminds me of the bolt action on a M-16. Something else that I'm not fond of..