I pick 1 CD of each : Orchestral, Chamber/ Sonata, Vocal (Female) , Hard Rock -which I hear most.
for tests on details, soundstage, air (decay). tonal balance,, sweetness, dynamic.
My priorities are in the same order as listed both in music and CDP performance preferences.
My understanding is : If details is not from the source (CDP) , amp & speakers can scarcely do much about it while Speakers have a lot to do in Dynamics.