I used a pair of these pars to add a nice wash over my dance floor. They definitely got the job done; they're extremely bright, but a little too bright honestly. You've gotta be careful where you point these things. Looking straight into them even for a fraction of a second gets you seeing spots. Otherwise, the viewing angles are more pleasant. Be careful when recording videos while in front of these as well because they can easily overexpose phone camera lenses. I'm not very experienced with theatrical lighting, but if you could elevate them, angle them down towards the dance floor, and keep them out of people's line of sight, I think they would be great budget wash lights.
The DMX programming is to be expected. First of all there's no remote, so you will need to control with DMX if you want to use these to their full potential. You've got standard RGB control, strobe, shows, etc. The general output fader in all channel mode unfortunately does not affect shows or sound active mode. If you wanted to program the shows into some basic scenes, they will be at full brightness no matter what. You'd be better off getting a DMX to USB and programming stuff using software like qlc+.
In summary, two of these pars could easily light up a medium-sized room like an event center, and even provide a strong wash to a larger room. Just be aware of how blinding they are, and position them properly. These won't be very useful for FX lighting unless you program things yourself.