I have used a variety of these units for many years in my work as a DJ and Artist. They are tried and tested technology and have been around for years. They haven't really changed in all that time. They don't have to.
Dead easy to set up, have a great auto sequencer which does all sorts of great patterns and the mic is built in so no need for any controllers. The bulbs last forever, I've never changed one yet!
My mate has a band and is often borrowing them to light up the back of him. The bulbs are very bright indeed. I still own two units for my own DJ rig when I'm not hiring in and I have them on lighting bars.
One word of warning for home users - the bulbs get VERY hot so at parties make sure they are out of the way of kids who will be drawn to them. Apart from that, plug it in, tweak the settings and let it get on with it. Superb piece of kit and dead reliable.