The VSM should work fine in your room. I'm currently using VSM-M's in a room that's a tad smaller than your's. Their top end is exemplary and the mid range has electrostatic clarity. Compared to other fast detailed speakers I've owned in recent years (e.g., Martin Logan requests, aerius i's, Dunlavy, Khorus, 10Ts), the VSM's are brighter, but their top end is so refined I've never found them to be fatiguing, etched or hard.
At the same time, as with other revealing speakers, the VSM's won't smooth over bad recordings. Still, I've found bad recordings tend to be more listenable through VSM's than, say, Martin Logans.
Another characteristic I've noticed of fast detailed speakers is that they can sound a bit lean compared to "warmer" or "lusher" speakers that suffer from driver overhang and extraneous overtones. The VSM's are no exception - depending on gear, they can sound a bit lean. A bit of a trade-off and matter of taste. Some like their music more meaty at the expense of some detail loss. Nothing wrong with that. I happen to favor clarity.
I guess what I'm getting at is you should probably try to audition the VSMs if you can (then again, I haven't talked to anyone who didn't like the sound of the VSM's). The VSM-MX and MM purportedly have a somewhat fuller sound and the VSM-M, though I haven't heard those models and can't confirm. I'm currently using an Aloia PST 11.01 inductive preamp which has a cogent midrange with good presence and makes the VSM-M's sound satisfyingly full (at least in my system with Cary V12 and ECD1).
I would also suggest contacting Bobby for any questions and recommendations. He knows the speaker line better than anyone. And I've found him to be very responsive, knowledgeable and supportive.
At the same time, as with other revealing speakers, the VSM's won't smooth over bad recordings. Still, I've found bad recordings tend to be more listenable through VSM's than, say, Martin Logans.
Another characteristic I've noticed of fast detailed speakers is that they can sound a bit lean compared to "warmer" or "lusher" speakers that suffer from driver overhang and extraneous overtones. The VSM's are no exception - depending on gear, they can sound a bit lean. A bit of a trade-off and matter of taste. Some like their music more meaty at the expense of some detail loss. Nothing wrong with that. I happen to favor clarity.
I guess what I'm getting at is you should probably try to audition the VSMs if you can (then again, I haven't talked to anyone who didn't like the sound of the VSM's). The VSM-MX and MM purportedly have a somewhat fuller sound and the VSM-M, though I haven't heard those models and can't confirm. I'm currently using an Aloia PST 11.01 inductive preamp which has a cogent midrange with good presence and makes the VSM-M's sound satisfyingly full (at least in my system with Cary V12 and ECD1).
I would also suggest contacting Bobby for any questions and recommendations. He knows the speaker line better than anyone. And I've found him to be very responsive, knowledgeable and supportive.