+1 for Auralic Aries mini. It's super flexible and the iPhone Directstream app is quite elegant. Plus, their customer service (if you ever need it) is outstanding.
Music Streamer Quality
This may be a dumb question but does the quality of a music streamer ultimately affect the sound? So here's some detail. I currently have a Sonos music streamer fed into a Simaudio Moon 300D dac. In the interest of having higher quality sound I could upgrade the dac or I could buy a dac with streaming capability such as the Simaudio 280D. I'm looking at a R2R ladder dac but would have the same Sonos feeding it. Does that make more sense than something like the Moon device? I appreciate an comments.