I decided to try another distro in VirtualBox - OpenGEU (formerly known as Geubuntu). Essentially it uses the Enlightenment window manager (like gOS does) to create a fast and very nice looking desktop.
It has two main themes available: Sunshine
Both look very impressive, even running in a virtual machine!
I've only tried two distros running Enlightenment, and both have a very attractive user interface, yet run very fast. Something tells me this desktop has a very bright future ahead of it - it may prove ideal for the generation of subnotebooks that will no doubt be following in the wake of the Eee PC, as it's ideal for low-spec machines yet can produce eye-candy to rival OS X.