I'm currently playing with GDE, Home++ and Panda Home. Panda Home was my favorite, but I thought I'd give GDE more of a chance.
I rarely, if ever, had a FC with Panda Home. GDE FC's when I want to do something as simple as change the background. I only used Home++ a few times. It seems nice, but I had a problem getting some widgets to work with it, and I don't like that it doesn't have any type of docking system like the side docks in Panda Home and the application docks in GDE.
All-in-all, I'd have to say that I'm happy, enough, with GDE to continue using it (for now). I still prefer Panda Home overall, but I am quite attached to GDE's application docks at the moment. I could live w/o the fancy transitions, but I won't give up my docks!
If Panda Home adds some better docks and gets rid of the ugly app tray button, then I'd probably switch back to PH because I feel that it's the least buggy of them all.