On this board we are more interested in Chistmas lights and build it yourself type projects which are to used only for personal/home presentations. Business or commercial use is a violation of the DLA rules.
Having said that, I also do lighting at my church. When we looked at the moveable yoke lights, the $4K/each for the light output we would need for the throw distances we would have and the ability to run near silent took them out of consideration...
For a rock concert, it doesn't matter if the lights make some noise when moving...
RM