I have a set of big JBL 12" ad 15" monitors we use for stage mixes with big bands. But, I'm looking for a smaller powered stage monitor for things like school talent shows where I don't need a ton of volume, just a little sound right there for a soloist to sing to a track. So I'm considering things like the EV ZXA1, QSC CP8 and the Yamaha DXR8.... open to others if there's something else you really like in that $400-$500 price range. What sounds best? What is the most durable? Love any thoughts you have on what's the best in this group of speakers. Thanks!