I have owned 2 of the amps you mentioned and used them with the Tyler Acoustics Tylo Reference Monitors (89db eff, I think). To me, the Bryston seemed to not have enough power at times. The Plinius is another story, with its much greater power output. I preferred the Plinius by a wide margin in my system/room.
BTW, according to a contact I trust, the Plinius 8100/8150/8200 sound nearly the same and the power increase for each successive unit is not that noticable. I also have a friend that owns the 8100 and he really likes it driving his Thiels (not a particularly easy load). If you don't need the little extra power or HT bypass circuit, look for a Plinius 8100 or 8150 in addition to the 8200.
Enjoy,
TIC
BTW, according to a contact I trust, the Plinius 8100/8150/8200 sound nearly the same and the power increase for each successive unit is not that noticable. I also have a friend that owns the 8100 and he really likes it driving his Thiels (not a particularly easy load). If you don't need the little extra power or HT bypass circuit, look for a Plinius 8100 or 8150 in addition to the 8200.
Enjoy,
TIC