On an overall balance, these are bright-ish speakers. In too big a room you may find that neither has enough bass without help.
Also, the Sopras have a significant impedance dip, like so many other Focals, at 100Hz. They really do need a stiff amp to sound at their best. If you go this route, avoid too much toe-in. Focals tend to sound smoother and image better pointed way behind your head. B&W's on the other hand like you to be below the tweet.