Of those on your list, I'd recommend the Aragon Sounstage. A friend of mine has one, and I've been pretty impressed with it, for a pre/pro. However, if 2 channel performance means that much to you, I'd recommend getting an analog 2 channel preamp with a SSP loop. 80% of my listening is to music, I've gone this route, and left the high end pre/pro camp for good. A Denon receiver fills my HT needs just fine, and I haven't heard a high end pre/pro yet (Proceed/Classe/Krell) sound as good in stereo as my current Classe CP-60. There are many good stereo preamps out there with SSP loops. I find that when watching movies, I'm visually distracted, so the audio isn't quite as crucial. The Denon only drives the center and surrounds, the mains are still driven by my Threshold amp. I can't really say that I feel as though I'm missing much when watching movies. Just my $.02
Regards,
John
Regards,
John