If this is any help, I have a pair of the 804S and when I was looking for an amp and cd player, both of the Brystons you mentioned were on my short list. I did end up choosing the Bryston CD player, but the amp I purchased is a Simaudio I-7 integrated. I preferred the sound I was hearing from this amp. This, of course is subjective, and someone else could find the opposite to be true. I also liked that it had a little more power (150 vs 100 WPC). but this may not be an issue for someone else. Also on my short list was a McIntosh 402 amp/C46 preamp. This would have stretched my budget a little too far for comfort, so I did not make this choice. I have lived with my system for 8 months now, and I am enjoying my music very much. Maybe the Mac/Bryston pair would be just a little nicer to my ears today, but the Simaudio/Bryston pairing works very well with the 804S's and I have no regrets in my decision. Had I not heard the Simaudio, or had it been beyond my budget, I would probably be saying the same thing about the B100, as it was also a very nice unit. The dealer I have purchased most of my system from always told me "whatever makes your toes tap", and that is good advice. Just as the comments that preceded this are good advice....try that combo with your speakers...in your own setting if possible, and if it makes your toes tap you have your answer.