Yeah, I know what you mean there. My bumblebee male has a pretty good wobble when you are holding him... he almost always ends up slithering around upside down in the air. But he seems to be the best eater out of the bunch, I have to watch it, because when he sees the food coming he does not wait for me to get situated at all.
He also definately seems to have a bit more personality as well. If he sees me hovering over him, he will tilt his head to the side like a dog so he can see me with an eyeball, pretty funny. My other balls definately do not do this.
I was a little hesitant getting him at first, going with the thought that why would you keep breeding a morph that obviously has some issues, but have since changed my mind.