Anyway, it looks like we'll have to wait for regular production mounts to get into the hands of serious imagers to answer this.
"Serious" imagers already have mounts. It isn't likely that users of premium gear are going to downgrade just to experiment any time soon, which is why it's great that Jason was supplied with one. I am fairly sure that I am the first to switch to an LX850 from a Tak NJP (I did it specifically because I wanted to evaluate the new mount). I haven't, however, relocated. Nor have I retired, which means that my opportunities under clear, dark skies have been limited. I can't do much on a weeknight if it doesn't get dark until 11:00 - and I'm in the center of the city, surrounded by concrete, asphalt, and brick so the seeing doesn't settle down until MUCH later. I'm still waiting for weekend opportunities to do the things I want to do to evaluate the mount. After that, if I become sufficiently bored, I may perform some of the specific tests folks are demanding. That will become far more likely if the demands are replaced by requests.
I used to do commissioned evaluations of astro gear. When something was sent to me for tests, I did whatever they requested and made it a priority to get them done as quickly as possible so I could return the gear. Even then, it always took longer than I wanted it to because of time and weather limitations. Nobody supplied this mount to me so I'm on my own dime and my own schedule.
Thank you for posting. I see you have a blog and after taking a look I see the following:
"I used the PEC editor to look at the PEC data stored in the mount. It’s a little disappointing; looks like maybe 16 p-p arcseconds uncorrected PE. I’ll call Meade about that at some point. PPEC and Starlock seem to be managing that pretty well, though."
If we exclude Jason, which is what I am going to do, then we have Andrew at 8 and John at 16.