Another to add, only because it is the one I use every day: A Sonore Optical Rendu, which is fed by a Small Green Computer i5 Sonic Transporter. I find the whole thing pretty effortless to set up and use (and I am a technological moron). Played through my Ayre QB-9 Twenty DAC, I am relaxed and engaged while streaming music. I use Roon through my iPad, and the whole user interface thing is easy and intuitive (I know, that's the Roon part, not the Sonore).
You can do it under your budget...
