I prefer Yamaha dxr more than qsc K series.More linear, more natural tone.
But, you will not go wrong with either one.
Don't forget rcf art 10. .You could find them pretty cheap.
also, there is jbl prx710 or ev etx10, but they are more money and you probably don't need that much power.
I would choose dxr10 or 8.
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