Goodbye Sonos, hello ????

I've been a happy Sonos user for over 10 years and will continue to use it in my casual listening areas in my house. However I dont think I am doing my dedicated 2 channel system justice streaming from the ZP-90. In addition, Sonos does not do high resolution. Therefore I am looking for a high quality digital transport/streamer that can replace the Sonos. Here are my requirements:

1. High quality, low jitter digital output
2. Awesome user interface with remote control via IPAD, ANDROID, iphone, etc
3. Wireless and wired digital streaming from music stored on a NAS
4. No built in DAC as I prefer to mix and match
5. Ability to handle various audio formats including high resolution.

So far it looks like my options are the Bryston BDP-2 or DIY my own streamer. I have built several low powered (ATOM) HTPC in my home to stream 1080p movies so this is definitely an option but I am not too sure about how to get the best possible, low jitter digital output from a PC so this would be something I need to investigate. I can build an ATOM based, fanless system running Jriver and my IPAD to remotely control my music. I know there are products from Linn and Accustic Arts but these all come with either a DAC or an amp.

So are there any other audiophile quality products on the market that fit my need or should I just go the DIY route?

Thank you.