What would be your list of the World's Top Ten DAC's and Why?

I first want to say I have not had experience with tons of DACS. But I’ve heard a few that I enjoyed. But whenever subjects like this are broached they seem to bring out the braggadocious and naysayers in droves. I’m simply asking for "opinions."

Some of the ones I’m thinking that are in the conversation are brands like: The Nagra HD DAC X, The MSB Select II, CH Precision C1, and The Chord DAVE/Blu MkII or Chord HugoTT2/MScaler combo, dCS Vivaldi stack, or Alpha DAC Reference Series 2 MQA?

Secondly, what do you think makes the difference between any of these DACS when compared to one another? And if you were purchasing any one of the Top Ten why would you choose one over the other?