That's scary, how you switched aspect ratios so easily.
I solved my Duo problem; it was the power button on the remote, apparently. I found the remote from my previous Duo, and it works fine. The button didn't feel any different on the newer remote, but maybe I sat on it by accident and did something. The factory reset worked for a few days and then it went back to not responding to the remote's power button; everything else was fine.
Thanks for the offer on the group buy, but I'll let it go for now. Unfortunately, the Radiance is now in my head since I downloaded the 2144's manual and see the high praise here and elsewhere for Lumagens generally. I don't have a 4K TV, but would get the 2144 over the 2124 (1080p) to future-proof against a 4K TV at some point.
VPI, Grado, SME, Pioneer Elite, Magnum Dynalab, Oppo, DVDO, McIntosh, JJ, Mirage, Kimber, Transparent, MIT, Pangea, Wireworld, Shunyata, PS Audio, Furman, Sanus