I used to use HT Pro9 and Silway II in my system, and also heard it in a friends system. I have switched over time from Pro9 to AP's 9 gauge copper speaker cable (I forget the name). Basically, the HT speaker cable sound is more neutral and clear but also, at least to my ear, sounds a little bit artificial. I prefer the AP sound generally, with it's greater harmonic information, even though I think there may be a slight sacrifice of detail (actually it sounds more natural to me). The HT had good bass but the AP had deeper richer bass.
I tested the AP hybrid silver/copper interconnects and liked them a lot, slightly better than the Silway II, but ultimately preferred my Quattrofil. I tested the AP hybrid silver/copper 12 gauge speaker cable and found it a bit more detailed in the treble but less natural and less bass than the AP 9 gauge copper speaker cable, so I stuck with the AP 9 gauge. I eventually bi-wired the 9 gauge. Talk about bass!
Art
I tested the AP hybrid silver/copper interconnects and liked them a lot, slightly better than the Silway II, but ultimately preferred my Quattrofil. I tested the AP hybrid silver/copper 12 gauge speaker cable and found it a bit more detailed in the treble but less natural and less bass than the AP 9 gauge copper speaker cable, so I stuck with the AP 9 gauge. I eventually bi-wired the 9 gauge. Talk about bass!
Art