I own and love my Olympica II in my small room, but for your size room, I would definitely go with the Olympica III. They should work perfect for you.
Sonas Faber OLYMPICA versions
I have a Hegel 190 with Blue Node 2 (using the Hegal DAC) using Sonus Faber Concerto & Rel sub for speakers. This creates a lovely sound in my 17x20 ft room with vaulted ceilings, but I'm ready to upgrade for a little more mid range and sound stage. Seems Olympica 2's might be a good choice, but I'm a little confused, seems not all Olympicas are the same, there are several releases over the years. Are some versions higher quality or generally better sounding then others?
I am not an audiophile, and most of the music I play is old blues and rock, but I do enjoy hearing it in it's best possible form.
Thanks
Ben