i think unity is great - for small screens :) i use it by myself on my netbook and there it is pretty good! I've tried many other desktops. Also xfce and lxde are good, since the netbook hardware is quite a bit limited, but the relative big icons and only one panel on top which integrates itself in a fullscrenn window is just perfect on a little screen! More space, less scrolling :)
I've also tried the gnome fallback, but it don't feels like gnome2 at all..