Best tube dac available?


I am looking for suggestions for the best tube dac available. I have heard good things about Audio Note, Zanden,and Ypsilon. I only plan on using it for red book cd's.
husk01
I had a Lamp is Big 6 and it was wonderful then heard the Bricasti M1 and didn't look back. 

(Dealer disclaimer)

I also have the Modwright Elyse DAC, find it to be a fine player. I still have the stock tubes installed. 
I owned a Lampi BIG 6 (did a LOT of tube rolling) and it was wonderful then heard a Bricasti M1 and it was head and shoulders above the tubed Lampi in my system. The M1 was more dimensional and the soundstage deeper and wider. Have not looked back!

(Dealer disclaimer)