I’ve had the Qutest for 4+ years and think it is super detailed and really special sounding with a huge soundstage and preciese pinpointing of instruments. I’m ready to replace it due to its age. But it’s so good it’s difficult to find anything under $5k that tops it. I may try one of the ones I listed above but I’m unsure if they’ll be better or just different.
There are many DACs under $3K that outclass the Qutest IME. I owned the Qutest twice (the second time bought it for a great price with the sole purpose of flipping) and while it does have good resolution, it’s relatively 2-dimensional, lean and edgy. That’s only relative to some other good performing DACs, a couple of which cost considerably less than the Qutest: the Marantz HD-DAC1 and Denafrips Ares II.
I can imagine a Qutest making for great synergy with a Mac anchored system. So of course, things aren’t always apples-to-apples.