The Aragon 4004 and 8008 are very good amps. They are notably better than Acurus, NAD, ADCOM, etc, just like the other response mentioned. Those amps displayed a lot of annoying exaggeration of sibilant consonants. The Aragon is in a different class. It is very close Krell (way overated). Bryston, I think makes the best sounding solid state amps. They are nice and warm sounding, not harsh at all, and can drive anything. Let me just mention when I say best, I mean best with a reasonble price of $5000 and under (not that 5G is a pawlty sum as it'll put a kid in state college for a 4 year degree here in Louisiana).
The Aragon is more like the Krell in the sense that it sounds cold and clinical. It projects a decent soundstage. The Aragons can pump out a lot of current and thus can drive just about anything.
Aragon is a great value. You get to jump into the next level of sonic integrity with just a little more cash outlay than an ADCOM or Parasound will cost you. The build quality is excellent and it's sounds good enough that you probably wouldn't want to buy anything new for quite a long time unless you wanted to move from SS to tube.
Ciao,
Daniel