Why not DSF? I'm using Sonore just like Todd to convert ISO into DSF. Then I tag each album with artwork in Jriver to complete the process. If I want to save space, I use Jriver to down covert DSF into 24/88.2 FLAC files for portable uses. However, those FLAC files seem to loose some minor but audible fidelity during the conversion process. Sadly I got addict to DSD (due to better mastering over redbook) and now I even use them on my ZX2/ZX100. Of course, the ZX2/ZX100 also double as my portable digital transport to any USB DAC.