I use two of them in stereo, Micky, and I've never been happier with such a great sound and awesome coverage.

Yes, that is expensive, but I don't need monitors and these things don't crowd you off the stage.

Plus, it's a one time buy, not like an arranger where you change up every several years or so.

I didn't care for the single system and the mono sound...stereo effects and stereo patches are thinner and kind of "pinched" sounding.

Ian