Sedluk, not sure about your comment about Escient being for housewives, but also not into flames in here, so I will leave it.

Spinaltap, AudioRequest is very similar to Escient. Nice interface, but same money and same limitations I think (not that I agree with lack of flexibility, as Sedluk mentioned) Hifidelio and iStream are both good products, but I am looking for the interface too. I intend to use one system for the house and HT (so my wife will also be using).

DR95497, I am considering the Azur640H, as it streams from your Mac (or PC), so removes concerns about disk space. I am yet to see it in action, but good reports so far. Do you know if the interface allows you to sort songs by Album Cover?

If only MS Media Centre was available native for Mac smile

3x DSP5200 L, R and C (all vertical), 4x Triad Silver in-wall surrounds and 6x Triad Silver in-ceiling ATMOS speakers, Triad Silver subwoofer, Denon AVR-X8500H, JVC DLA-7500 4K projector and Screen Research 120" AT 2.35:1 screen.
Apple TV 4K and Oppo UDP-203 Blu-ray player.