I've been running a QuietOne 3000 for the past 3 years without a hiccup. Very energy efficient, runs cooler than a Mag, and never fails to start. As Nocturnal stated, it does click on startup, but that's never bugged me too much. BTW, I start and stop this pump at least once daily when I feed. Also, I'll sheepishly admit to only cleaning it maybe once a year.
Chris