No 30.5 & 31.5. Still of reference quality ?

have you considered trying the DCS Purcell upsampler with your current theta processor and transport? Around 2k used price for the upsampler

I replaced my theta data basic II and gen Va with a
mark levinson 37 and 360s. The levinson gear is
a lot more relaxed in its presentation. If nothing else
try replacing your data basic II with a cheap
(200.00 US) sony dvd player. This made a big difference
in my system and prompted my change to the levinson.

The build quality and aesthetics of the 30.6 & 31.5 are excellent. Unfortunately, technology has passed them by. Personally, I feel there are a number of other systems that better them for the same money.