Hmm, I might just go for the Cap 1400 to be safe. If you want all your bases covered, get the Cap S2. The reason why I say an S1 would be better in a small room is because the acoustics will boost the deep bass and you can get a nice boost in infrasonic regions, more so than with the Cap 1400 because the 1400 shaves off its deep bass a lot more as a consequence of its ported design. The 1400 will give you more 16 to 30 Hz bass, but the S1 will give you more bass below 15 Hz. However, in order to be palpable, that deep bass has to be shored up by room gain from a small room. Either would sound great though.