I can not comment on the Stenheims but if you like the Devore Orangutan sound you should consider the O/93 in that size room. They are not quite as immediately engaging and propulsive as the O/96's but imho are the more neutral and natural speaker that conveys something closer to the recording. I have three tube amps, an ARC Ref 150SE, and ARC Ref 80S and an Ampsandsound Nautilus which put out 150, 80, and 8 (yes, eight) watts respectively and each sound great with the O/93's.
Make no mistake (as to my op), if I had a much larger room I would get the O/96's. Screw "neutrality", the O/96's flat out boogie!