I made the switch from Beryl to Compiz-Fusion just now. Overall I like the fact that I have some of my favorite Beryl plugins in Compiz and that there is finally a Compiz Settings Manager so that I can easily set up the plugins to my liking.
Though I find it lacking at the moment. There seem to be some minor issues with some things. Like for example, if I set the “Rotate Cube on Mouse Button2” setting, it will go into “rotate mode” any time I press the middle mouse button. Even if I’m trying to just open a web link in a new tab. Really annoying. Also I do not like the new “Rotate Cube” plugin, it seems slower than Beryl and I get massive frame rate drops (30fps from 75) where in Beryl I got none. Seems to me that while improvements have been made, some things have been made worse.
I understand that this is still fairly “alpha” as far as release goes, but Beryl was fairly solid and I had very few issues with it. Hopefully they can get the kinks worked out by the time Ubuntu Gusty Gibbons comes out