Bought this one a while back
SPB Shell 3D
It's very visually pleasing and functions quite well as far as scrolling/overall smoothness when switching screens and the 3D effects.
I haven't used it since the latest update this past September.
I know there are other similar launchers out now, but I don't know much about them.
Overall it looks really freaking cool and is great eye candy, but lacks the functionality of other launchers such as Apex which I am currently using.
Hope that helped.