I picked up four of these for use with my live band, and they are MUCH smaller than the old cans we used to have; that alone means less space needed onstage and less space taken up in vehicles.
They are fully DMX, and will accept a controller, master\slave settings and also have auto settings as well. This makes them super versatile for different stages and spaces.
I have them on the floor, or clamp them to speaker stands when space is really tight. They would also mount to T bar stands etc. They pack down nice and efficiently, and I have used them for years without issues.
The negatives; they don't have a huge spread, which is partly due to the nature of the LEDs, and they are not super bright. They are fine for 'atmospheric' lighting purposes, but on an entirely dark stage I would probably need eight rather than four. However, this price point of lighting is most likely for bands and acts that just need a bit of 'mood' lighting; whenever we go to larger venues they have their own lighting anyway.
As long as you are aware of what you are buying, these are great.