Update: After deciding on the PSB C-LCR, Justin Brees, of AM House, a high-end home theater and home remote control design and installation firm in Los Angeles, asked to put a final contender in the ring. He and his colleague came over yesterday and we set up a Revel C763 in a Dynabox flexible plastic back box.
(Justin is going to be installing an elaborate Elan 8.0 remote control system in the house. He is also going be installing 11 pairs of the winner of this speaker contest. I highly recommend Justin for your home automation and whole-house music distribution projects.)
The Revel in the back box sounds very similar to the PSB.
This is going to be a difficult choice!