I am yet to hear a Class D amp that does not sound rhythmically and musically disjointed.If anything the newer Purifi ones sound worse in that regard than the Hypex.Everything else might be better but if you listen to rhythmically intricate music played by good musicians you will hear how peculiar they sound.A lot of people seem not to notice that but it does not mean it is OK.My guess is if you have no sense of rhythm and are a poor dancer then Class D might be fine for you!
Of course a lot of SETS are weak in that area too-although they tend to sound more slow/plodding than disjointed.My Almarro 318B was pretty good in that area but I have used some that were pretty terrible-an Audio Note Kit 1 300B and Consonance Cyber 845 monoblocks for example.