Zero DAC is "better" than the Emu 0404 to my ears. The reason for the quotes is I believe the Zero to be a bit colored, but it is a very pleasant hue
Zero is also better than Beresford Mk III I spent some time with.
I'm interested in the Keces but not enough to drop the $$$ on it.
I'm also interested in the Opus and will buy the parts as soon as available again.
I haven't heard it, but if I was shopping for a cheap DAC only, I'd consider the 707 usb. If it doesn't pan out you should get most of your modest investment back pretty quick. I'd buy it from you for 90% if you'd take the shipping hit