I can comment on the Bryston and Blue Circle. In comparison the Bryston will have sharper bass, more neutral towards the highs and is a little "cooler" than the Blue Circle. The Blue Circle will have more "warmth" and a little more personality.
The BC22 is probably more "there", like sitting in the front half of a concert hall for an orchestra or band (or the Bryston is more distant / sitting nearer the back). The BC22 goes great with the BC21 Tube preamp if you have not choses a preamp yet. If you try this setup, also use the BC95 interconnects as the pre/power link cable.
It is all a matter of taste which one you choose. They are both nice amps. I prefer the Blue Circle, but I also have box seats overlooking the Baltimore Symphony stage, so I like that immediacy, like the conductor gets. If you more of a person who likes the music a little more cool and distant, then maybe the Bryston is a better choice. Good Luck!