PS Audio Directstream for me (it's the third PS audio DAC i've had, previous one was a Cullen circuits modified that i preferred to an opus 21 set up) I A/B'd it when i went to audition and it was Night/Day better. As previously stated, free firmware update every year or so = an even better dac.
Transport is an old Denon 2910 DVD player with a clock thrown in it - it's as good as anything else i've tried (not tried any of the PS audio perfectwave / directstream though)
PS Audio Directstream DAC, modified Dennon DVD player, SP10, Trans Fi linear tracker, Stack audio streamer
1980's Aloia 6L6 prototype, Cat's Whiskers Autum Leaves 300 B mono blocks, Definative Audio modded Rogue 88 Magmum 6550. Firebottle LDR battery pre. Classe 103, Herron VT2
RFC Tannoy Cheviot's,Wilmslow Audio modified Chario Academy Millenium II's,Frankenstein DIY's, Oris Onken horns, Fostek full range drivers
Ripnas etc