This Stairville LED Bar is fantastic. I use it for many different applications including uplighting internal and external walls of buildings, washing stages and for pixel mapping. This LED Bar works well in all of these situations and performs well. It has many built in programs and chases, which mean that it can easily be plugged into power and used without any DMX programming etc. In these modes, multiple bars can be synchronized together by using Master/Slave.
As well as the built in programs, the Bar can also be controlled over DMX. The onboard screen allows you to choose the DMX address of the fixture as well as choose how many DMX channels you want the bar to use. (2 Channel, 3 Channel, 5 Channel and 24 Channel). I personally always use 24 Channel mode so that I have more control over the bar, however in testing all the others work well.
The position of the IEC In and Out ports on the back of the bar is great. In is on one end of the bar and Out on the other, reducing the mess of cables when uplighting. It would be good if the DMX ports were like this too, instead of in the middle of the bar like they are currently.
Another con is that when using the onboard screen and buttons, the buttons feel quite loose, like they are going to fall off, although if I'm using DMX and have set the address, I don't need to use the buttons to control the bar.