Garebear, I am also a D-40r owner. I wish I had a larger room, but mine is closer to the size of your room (you can see it in my system), and the D-40r work well in that room. I think the smaller D-30r would also work well.
I have listened to the WB Vector and Vertex speakers quite a bit in the same room as I heard the D-40r. I have not heard the WB Square 3. The dealer I purchased the D-40r from carries both Proac and WB. The WB are very fast and to me have more emphasis on the treble area. The Vector speakers have tremendous bass. I think WB makes a great speaker.
In the end I preferred the sound of the Proac speakers (maybe it is familiarity because I have owned many Proac speakers in the past) and bought them.
Goldman, please post your system with Proac D-40r speakers. I would love to see it.
I hope this is helpful. Happy Holidays.
I have listened to the WB Vector and Vertex speakers quite a bit in the same room as I heard the D-40r. I have not heard the WB Square 3. The dealer I purchased the D-40r from carries both Proac and WB. The WB are very fast and to me have more emphasis on the treble area. The Vector speakers have tremendous bass. I think WB makes a great speaker.
In the end I preferred the sound of the Proac speakers (maybe it is familiarity because I have owned many Proac speakers in the past) and bought them.
Goldman, please post your system with Proac D-40r speakers. I would love to see it.
I hope this is helpful. Happy Holidays.