I used to own the Calyx dac, only sold it because I needed toslink. It's a wonderful dac, extremely open, airy and neutral, but I wouldn't call it warm and organic. If you are using tubes (as I was), it's a great match. However if you are looking for some flavour, you might stick with a tube dac. The EE minimax is very nice in that regard. I have no experience with the other dacs you mention.
Have the w4s dac 2 now. I'd say warmer than the Calyx.
Have the w4s dac 2 now. I'd say warmer than the Calyx.