For the record I have heard the DK Mk II coupled with some great gear, Usher Dancer 8871's, Esoteric DV-50, Aesthetix preamp (top of the line model - can't recall name) with very high end Synergistic Research cabling.
I still maintain my above position. May be "great" for 5K. IMHO, from what I have heard I don't find the DK worth it's asking price. I actually find it laughable there are so many new "members" that find it superior to proven names in the industry. I may not agree with the esoteric products pricing, however you are paying for the R&D that went into that product as well.
Anyhow, again IMHO there isn't a comparison.
Others have above stated, it is only your ears that matter however, and if you find audio nirvana with the DK congrats. I am not so sure professing it kills other well regarded amps will create any new beleivers.
Audioaril, why not post your system so the rest of us that may be a "bit" skeptical can get an idea of your associated gear.