DAC Help

Hello everyone.  New to the hobby and finally starting to piece together a complete Stereo/AV system.  My current set up: 

Sonus Guarneri evolution
Sonus Amati Center
JL Audio sub
Krell Phantom
Krell 403
Rotel HD CD player 

Currently listening to two DACs for the past few days:

NADAC 
CANARY KD2000

My thoughts so far:

With the NADAC,  the vocals appear more forward, front and center and the music sort of a step behind the singer.   Theres more airiness to the vocals that sometimes feels or sounds artificial?  Sound stage is very similar with the Canary sounding a bit more "musically" of the two.  I'm also considering the Lampizator GG and the EMM labs DA2.  I'd appreciate any input and suggestions.  Thanks.