Any update on this? I have a RP3 and have been using an external dac as well but I'm wondering how the HiFiberry et al perform. I've also got a Digi+ board on the way so I can try the dac built into my integrated amp as the external dac I used, Nuforce udac3, is buggy and not recognized by the runeaudio software I am using. It works but drops out every now and then.