Originally Posted by shredisn@tdead
Is yours under load when you listened to it? My BQE PSU is far from silent under load. Gotta agree with the fans though - need a fan controller or volt mod them (eg google "7v mod" or "5v mod").
I have both the SLK3700BQE and the Sonata :D and I've gotta say that the Sonata is much quieter than BQE. I bought the BQE after the Sonata after reading about it on SilentPCReview.com.
Another anoying thing is that with a 120mm intake fan running too fast (eg regular non-silent low-rpm running at 12v) it creates a really annoying whine when the front cover is on (bit with the slots).
The Sonata has one less 5.25" bay, so isn't quite so tall, but if you need the 4 bays get the BQE! However, I'd have rather bought a 2nd Sonata. Still, you live, you learn...