Most (all?) of my Mp3s were done aover 3-4 years ago - mainly to fit on a portable player I was using (only 96Mb of space).
I have been using Monkeys Audio (APE files), which is a lossless medium, to transfer my CDs to my PC.
I assume one of the advantages (for me) of DVD-Audio albums is that I can play them on my PC and standalone DVD player - whereas I would need another machine for SACD (unless it was a hybrid)?