April Music Stello DA-100 et. al

Looking for a good inexpensive Dac to use with a Denon 2900 as transport. I also want to be able to play my Itunes library through the Dac in a second system. The suspects thus far: April Stello DA-100, Cambridge Dac Magic, Music Hall 25.2. Should I be considering others? Budget top end $500 used and I would like to be closer to $300. Will be paired with Sound Dynamics 300ti speakers, CJ PV10 pre and Classe Ca-100 amp.
Music Hall sounded weak to me. But you may also want to consider the HRT. I've only seen positive comments on it.