These work pretty well for the cost.They work well with a DMX controller and have very good brightness and range. They make a great flood/wash. The first two that I bought had only 2 screws mounting the fan, causing a rattle depending on how the light was positioned. The most recent set have the fan fully secured. The fan is still a bit noisy, but mounted up high this probably would not be as noticeable. The last two I did modify to quiet down - I don't really care about voiding the warranty here since they are so cheap. I will probably modify these two as well. I added some heat sinks to the back of the LED board to improve cooling with the slower fan speed.
One major pro with the two I just received is the Power input connector is now a standard IEC connector (same as a computer input) - instead of being hardwired. I consider this a big upgrade, as now I'm no longer limited to the short length of the cord and can use any length IEC cable that I need.