I use two B210Ds as occasional stage monitors in my two bands (rock and indie-pop) and I'd say for the price they do get the job done.
The sound - nothing spectacular but overall quite pleasant. Very warm sounding, deep bass rather non-existent, high-mids quite supressed, treble ok. Missing crisp high-mids which makes vocals and instruments like guitars and keyboards a little lacking in the mix. These are otherwise loud enough as monitors for a typical rock band.
Have been reliable for several years, the construction and controls are good, I'm sure these could take a little beating.