Hi Mike,
Nice to see you back...
I am still enjoying a lot my MM3... thanks for the listening session one year ago!
Given your perpetual quest for perfection, I think you should give a listening to the APL NWO3.0GO. I upgraded 3 months ago my CD player from 2.5 to 3.0: I have to say this is a completely different animal! never heard something so close to analog sources.... so natural, so dynamic and so detailed at the same time. You can listen to it for hours w/o fatigue... and you are hearing things you never heard before on your favorite records... For me at least it is a real breakthrough product. I strongly encourage you to go for a listening session... on your system (you may change your opinion on CD players with tube output, who knows!). If you do the test, it has to be the 3.0. Previous version are completely different.
Another interesting development is I just bought an APL UA-S1 hybrid amp (completely blind). $5000 but it may end up replacing my Dartzeel... Nothing I have to complain about the Dart, but I was curious!... and if I still prefer the Dart I will use the APL in my second system. I am now traveling abroad so didn't have time to do the comparison yet, will keep you posted if you are interested. Only thing I can say in the meantime is that I know one guy who sold his Dart when he bought the APL... and another one who replaced his $35k Edge monoblocks... intriguing enough to try it myself!
cheers

