I've heard Doc B's Straight 8's @96dB efficiency driven by Paramours and they were quite powerful and dynamic sounding in a room about the size of yours. I bet the 'Mours will do a good job with the Pi's. I think I know what you mean by different sounding. I have about had it with the "audiophile" sound of polite and discrete soundstage where you have to transport yourself into a spectator a foot or two tall to get in scale with the music or have to peer from a distant balcony and imagine what the music must sound like if you had the good seats! I guess the Avalons and big Genesis's etc. can get the mojo going but at what price? They sure ought to!
I guess Doc has had a busy last few months with VSAC and his moving and restructuring his business. I've just place an order for a pair of Paramours and hope I'll get them in less time than you've waited.
Garland