@audphile1 - PS Audio is not offering a trade-in on the P12 during the promotion since they are offering it at a significant discount. But I'm sure I can get a reasonable price for the P3 if I go this route.
I don't really need the extra capacity since I doubt my source components are using more than about half the P3's capacity. But if you believe the comments from customers on the PS Audio forum, the bigger units provide additional sound quality improvements compared to the P3. I'm just trying to get a broader perspective.
I don't really like the idea of buying something for a home trial unless I have a pretty high confidence that I'm going to keep it, although I certainly appreciate PS Audio's return policy.