I traded a Wadia 861 for a Wavelength Brick Silver.
Prior to obtaining a MacBook to drive the Brick, I used a very old Dell Pentium II desktop with an external hard drive. With the exception of PC fan noise, the sonics were the same as the MacBook -- superb! So, as long as one is using an external DAC, and a "silent" PC (the MacBook is), the PC doesn't have to be state of the art!
Sonics are superb, convenience is spectacular -- even better than I had imagined! In my book this is an impossible combination to beat. Of course, one has to do a lot of ripping. But over the years my son and I had ripped hundreds of discs in order to record compilations. So the software was present, and backed-up, we have duplicates of each others tunes stored at different sites.
For my purposes, the game is over.