Hey Spockfish, my system is pretty similar to yours, I have blue lines on CD and it sounds pretty good already through my rega DAC!
I have yet to buy any hi res music but would be interested to make full use of my DAC, so far only been using CDs thru a marantz then into the rega DAC.
Can you recommend any hi res music..... Listen to lot a stuff like MA, Leftfield, orbital etc as well a lot of other stuff.
Thanks
Ps just had a quick google.....think I might have to treat myself to the box set especially as I have just invested in a Rega Turntable!