the cube allows me to switch quickly between desktops.
You can also map some key combination to desktop switching in Control Center > Regional Accesibility > Keyboard Shortcuts.
I mapped Alt+q to previous desktop and Alt+w to next desktop, but you can map whatever keys to it... and, at least in xfce, you can make the pager switch to the first one when it reaches the last desktop.
There are a lot more options, also depending on the spacial layout of the desktops, but I find "previous" and "next" work fine.
Not to slag off the cube, but just thought I'd mention this because it is even faster (because you don't waste time watching the cube spin).