I bought a single one of these to go with a much older example that I had bought used some time ago to use as a monitor. I wanted to have a quick to set up easy to carry PA for small events. I have a 4/5 box solution - these speakers, the bag with Gravity stands, a Behringer 2442 mixer (one effects unit built in) and optionally a subwoofer.
Like everything Behringer the power rating seems to be somewhat optimistic, but they are loud enough for what they are. There is a good range of EQ available, and having the bass turned up a bit certainly helps the overall tone, even if they are always sounding a little 'boxy'. They are also versatile in that they can easily be used as stage monitors. I rate the quality of these highly because my second unit was manufactured in 2012 and still sounds and looks exactly the same as the new one. I have to look closely to tell which is which. The amplifiers themselves are more than adequately noiseless.
In short, a perfect budget solution for smaller venues or stage monitoring. There are obviously much better sounding speakers at much higher prices. But if you are on a budget, don't hesitate, these will serve you well.