@Ryder. The Rega sounded good at what I consider a comfortably high level. Maybe it was the right amp for the right speaker? Or maybe it was the room? Which was only about 14x10, not much acoustic treatment and no back wall as it opened up to the showroom behind the listening position. I really can't say if I'd prefer more power, it sounded good for what it is. The Bryston is in a different league, I can only imagine how much better the 1.7 must sound with Bryston. However, if my budget was limited (which it always is) I'd would not hesitate to drive the 1.7 with the Rega until I could afford Bryston or Pass or something in that realm.
@laudio I would encourage you to also audition the NAD 326. As the owner of the similar 325, I enjoy what I am hearing for such a modestly priced amp -- very full and powerfull sound. I'd have to spend 5x as much to better it, IMHO.