Rapogee,
My experience has been that you have to go up a ways in the Harmonic Tech line before you get the kind of smooth high end you're talking about. I have an "edgy" speakers (Thiel 3.6's) and it wasn't until I got the Magic Link II's by HT that the top end grain disappered. They can be found used for what I consider to be a somewhat moderate price. I also recommend HT's magic reference woofer speaker cables for smoothing out high end etch...but they're pricey.
My experience has been that you have to go up a ways in the Harmonic Tech line before you get the kind of smooth high end you're talking about. I have an "edgy" speakers (Thiel 3.6's) and it wasn't until I got the Magic Link II's by HT that the top end grain disappered. They can be found used for what I consider to be a somewhat moderate price. I also recommend HT's magic reference woofer speaker cables for smoothing out high end etch...but they're pricey.