Lubuntu has a DE that I don’t want. Openbox doesn’t have a DE. I have hot corners enabled, with menu jumping out, when I move the cursor to the bottom left corner. I also have a full screen task switcher on the bottom right hand corner. I can move from one virtual desktop to another by turning the scroll wheel on Tint2 or any free place on the screen. Ah, btw, I use LXAppearance from LXDE on Openbox.
Lubuntu is going the QT way now, even though it might contain Openbox. Anyway, with QT, I’ll use the more fully fledged Kubuntu. So, it’d be Kubuntu, Openbox and Unity, all from Ubuntu in 3 partitions, one of them being an official flavour.