I've used and sold allot of the powered speaker lines. QSC had set a new standard with their powered speakers, Yamaha had designed their DXR speakers to compete with the QSCs, and with of course each person's opinion on sound, they are very close to each other, with some differences,

For sure is you can't go wrong with either.

The Yamaha's are less expensive and are currently coming with a padded case, and has a 7 year warranty where I believe the QSC has a 3 year