Hello,
My experience of Daphile on a Ayre QB9 (lent to me) because I’m still waiting to receive my PWD 
The SQ is really good, I compared it against a Raspberry PI with RuneAudio (not able to run Volumio) and I preferred the Daphile sound and solution. To my ears, the SQ of Daphile on my PC was largely, largely better than the RaspberryPI (same USB cable).
Daphile rely on Logitech Media Server (LMS) which is very powerful and rich in term of functionality. Initialy I ran the LMS included in Daphile, so locally on the PC (a NUC with thunderbolt / network interface) . I finally preferred the option to run LMS on the NAS (QNAP) which has the advantage to free a little bit the CPU load on the NUC. The NUC is powerful, unfortunately it is NOT Fanless (a mistake I made, I was sure to buy a fanless PC).
I’ve found SqueezCommander on Android which works very well and user friendly.
On iPad, iPeng is good, even if the GUI is sometimes weird to me.
Note also that the Daphile developer answer quickly (for the moment 
to questions and was very helpful.
Here is my feedback.
Cheers