I've owned a pair of Klipsch Promedias for about 6 months now and absolutely love them. My brother has the Cambridge FPS1000's and there's just no comparison. As for the hissing and crackling mentioned, there's none of that present in my rear speakers, unless you're changing the volume and even then it's very minor. Otherwise, i find virtually no distortion even when my ears start to hurt since the Klipsh's can get so loud. If you can afford them, i'd recommend them. I'll be keeping these speakers for another couple years at least.