Rega DAC vs Micromega MyDAC

Has anyone compared these DACs? I have been sitting on the digital sidelines using the Mydac experimenting with computer audio trying to understand what works for me. I have decided I don't want a computer audio setup and don't really care about the hi-rez format. Vinyl is my primary source and I don't want to invest much down the digital path. I have a Rega Osiris amp and wonder if the Rega DAC would be an improvement over the MyDAC? I would be playing mainly CDs through a transport.

Long term I would like to add a simple streamer that I can attach a external hard drive to and run from a tablet. That way I can organize and backup the files on my desktop. Any reasonable priced products out there that would do it? Alot of them seem to be packaged with hard drives and DACs, I just want a streaming device that will read the hard drive and feed a simple DAC.