Speaker recommendations please

I have a small room with a sprung floor, brick and plaster walls. 12' by 13', with an incursive chimney breast and a curved bay. Not ideal I know. I want unobtrusive floor or stand mounts that will be, of course, everything. Smooth, dynamic, seemless, spacious etc, which do not require too much rear space.
The Amp is a MF A1000. I do not want to change. Although it is a high current total class A, low resistive values make it cry, 8 ohm's is best and the higher the sensitivity the better it sings. Preferbly above 89db. (Ie Avalons and Magnepans are out of the question!)