What exactly is being asked? If you mean the quality of mastering and so forth it can vary. I wouldn't approach listening to music from that angle though. You stumble upon unbelievable **** and you then attempt to find the best quality audio available not the other way around. But here are a few albums that stand out to me as far as I can recall in terms of detail and enhanced quality when listening with headphones or an audiophile like audio system.
Fat Jon - Wave Motion (2002)
Panacea - 12 Step Program (2010)
The Strange Fruit Project - From Divine (2002)
Dday One - Heavy Migration (2008)
And I'd agree with Donuts being well recorded, but there are way worse recorded Dilla joints that I rather listen to. A lot of instrumental hip hop has a more enjoyable listening experience under audiophile conditions versus not. The gap in enjoyment is more noticeable than when listening Boot Camp Clik or whoever. Peace.