I share your thoughts and frostrations. I just completed the same battle with HGS with certain Dave Ward. As I see it, Madrigal has publically misled its customers and the its competitors through false advestisement. Die hard owners should get together demand what was not only a promise, but the separating factor in chosing Madrigal from other brands, much less expensive, but very capable of doing the job.
Right now, HGS, is touting the Lexicon as the replacement for the PAV/PDSD, and future upgrade to the likes of the AVP. I say that's bull....!
The letter, I received from Madrigal, when they decided to discontinue the PAV/PDSD stated Mark Levinson are more alike than we can possibly imagine. They share similar platforms and software; cosmetic difference, yes; parts and sound quality not so differnt. So...as it is said... what good for the gender is also good for the rest of us..NO 40...as I see it, same software upgrade to PAV/PDSD!
Die Hard Owners make some noise, "FUTURE PROOF" your system, as you had chosen to do upon your purchase of the PDSD to mate with the PAV.