I worked with a band called "Borderline" and they have changed out their passive stage monitors and power amps with compact, Yamaha DXR 10 power speakers for their stage monitors.
The first time I heard these speakers in action I was completely impressed with the excellent sound quality of such a compact, portable, powered speaker! There were so easy to setup and use and provide the band with an awesome stage monitor mix!
With 1100 watts of built in power and onboard DSP, these little beauties sound amazing!
There are very easy to setup and if you need more monitors, you can just plug in and add more to the signal chain.
Here is a video from Yamaha that highlights all the features of the DXR Series Loudspeakers: