id say pretty mid pack. Theres definitely better and worse. Their amps are pretty good for the price, and same with their subs. Like i said, their pretty much in the middle of the car audio spectrum
They've came a long way since I first started getting into car audio equipment. I've owned a pair of 6000 series 10's, a trilogy of 5000 10's and a few other assorted MTX woofers, I've found them to be solid and reliable. They tend to sound better than there price range would insist. I have no experience with there highs, and very limited experience with there amps, but all of the MTX encounters I've had over the last 3 or so years have been positive.