I'm also a Pan early adopter, and since I've learned a lot by reading these posts, I think I'll give back even before my speakers have fully broken in. First, I agree with some comments from others that prior to break in, the speakers sound "uninvolving" and "unremarkable." On the plus side, they did nothing offensive either, which was a good sign. The soundstage was recessed behind the speakers and they sounded dull. I was worried, and even more worried as I approached 40 hours of periodic playing. I don't have the liberty of playing them continuously since they're in my living room.
Not sure what happened or when exactly, but sometime after 50 hours the stage moved more forward and instead of the 20th row in the theatre, I'm now in the 2nd. Utterly gorgeous, musical and pleasing. No listener fatigue, good detail, the best tonality with piano and guitar I've personally heard (the speakers had the tone/timbre from day one but didn't feel alive). I realize this post could go over in the break-in topic, but thought it important for future Pan owners. The analogy I kept thinking was a race horse being held back by the jockey. Can't wait to hear everything after another 50.