none of mine tear or flicker ... maybe you're doing it wrong?
or are you talking about using blob?
I don't care about what average joe wants I just want something that is functional and completely customizable. By all means have beryl/compiz/compiz-fusion/gnome-shell/unititty but be aware - this is just Yet Another Amusing Misuse Of Resources and as your lap starts to cook and your battery drains you should be able to switch these effects off on the fly without losing any functionality as you could simply using gnome2 and compiz/fusion-icon
give openbox a try, a WM with great effects with none of the cost...