The SoundSticks look and sound great with my Cube under both Mac OS 9.1 and Mac OS X. I like them better than the equivalently-priced Sony speakers hooked up to my Wintel box. Plus, the SoundSticks look *awesome* compared to the plain black Sonys.
BTW, SoundSticks use an external power plug rather than drawing power from the USB bus, so it's safe to plug SoundSticks into a USB hub.