The Gnome 3.0 Fallback mode is one of the nicest Classic Gnome interfaces available. With compiz I think it may be one of the nicest gnome desktops bar none.
And it is easy to get compiz working with it. Really easy. One command easy.
# yum install compiz compiz-gnome compiz-manager compiz-plugins main
Now one you enter your username at GDM you will be presented with a pull-down from here you can select. “Classic GNOME with Compiz”.