May KTE is a phenomenal DAC. I never had a delay using USB. But now I’m running a 60’ AES cable from my server in the basement to the May. It does take a second to lock when switching bitrates. Not a big issue for me.
I actually prefer the May to Tambaqui and Grimm MU2 DAC. It has more weight and body. Lampizator could be on your list if you don’t mind messing with tubes.