Def no diminishing returns with the lumagen. It’s a big upgrade
I don't disagree that it's an upgrade, but there's also a very steep price for that upgrade. The JVC DTM is very good on 95% of material. Yes, the occasional disc will trip it up where the Lumagen/Envy will look better, but you pay a lot for that 5%. I realize there are more benefits as well (auto aspect detection, etc.), but at this time it's out of my personal price range. I spent funs on the Trinnov and decided to put a golf simulator in my garage.