John ol' buddy, it is ALWAYS a pleasure hearing from you, and you are NEVER a bother! In fact, I was gonna hit you up over the next few days anyway just say hi and to see how thing's are going since we hadn't talked in a while.
Hope you had a great holiday, too, btw.
Sounds to me like the issue is more with the BD60 than the 805, but it could just as well be partially responsible for your issues as well, depending.
It's been a while, so I don't remember if you updated your DSPs yet. The DTS bomb is directly addressed with the DSP update, as it completely lays that issue to rest. It also definitely doesn't hurt to update your Main Firmware from v1.06 to v1.08, and if you have a serial port on your computer, it's even easier than you might imagine. (People have had mixed results using USB-to-serial adapter cables, however.)
Panasonic products (both BD players and HD projectors) are known to be problematic with Onkyo receivers, particularly the x05 series. I think it has something to do with a communication link (EDID) issue between the two manufacturers. Whereby one Panny product could be relatively problem free, another could easily just wreak havoc. The only negative I can think of in going back to the BD30 is that it's not BDLive-capable. Then again, that's only an issue if you're into the extras and what-not.
In addition to the DSP and Main firmware updates, you may also need to update your HDMI firmware as well. I borrowed a friend's Panny AE-3000 projector once, which wouldn't work with my 805 with HDMI firmware v1.01; when I updated it to v1.02, the projector worked like a charm. Panny and Onkyo simply don't always play nice together, and it's a known issue.
Go back to the Firmware/Update Requests thread that you linked to and do a search for member TSPEER. In his signature there is a link to an All-in-One update package that contains ALL the updates necessary for the 805 (Main, DSP and HDMI) along with complete and illustrated instructions. It's an amazing package, John, and it has been a godsend to a great many of us. After you download the package, you can either burn it to CD as an .iso (like you would with a music CD) or open it with a zip reader like WinRAR that extracts the files without having to burn a disc. Whichever way you go, just take a little time out to read it's contents thoroughly and then decide if you want to proceed. I'm willing to bet, though, that once your 805 is COMPLETELY up-to-date, you'll have fewer and fewer problems with discs and attached players (even the Pannys).
First thing's first, though... let me know what firmware versions your unit does or does not have, and then we'll take it from there, okay? Again, it's great hearing from you... and I'll be more than happy to help out any way I can.