Look, I am an engineer by education also, but I gave up on the idea that we can measure everything that matters in audio and relate that measurement to what we hear. Either we are measuring the wrong things, or we dont understand the effect of the measurements we are taking. So, the 70s idea that ultimate distortion measurements in amplifiers was important created some of the worst sounding equipment ever made. Just as "perfect sound forever" was a joke.
But, if you like your technics, then why not just get another one. They are on ebay all the time for less than $500. They are a decent player, certainly as good as a cheap Rega or Music Hall.
If you want something to drool about at home and which has engineering theory behind it, try an Oracle Delphi for looks, a Sota Star vacuum player for performance. You should be able to pick up either for less than $2000 used, maybe with arm depending on which MK version. Either is, IMO, a substantial upgrade from the Technics.