FYI, I've read that when you buy the download version of VMS+DVD, Sony sends you (or asks you if you want them to send you) a CD with the software, and that this CD as a manual in PDF form. If that's the case, I'm surprised they don't have it for download anywhere... Unless, of course, it's just the DVDA 1 manual...
The differences between DVDA Studio and DVDA 1.0 appear negligable but it is nice to have the "correct" manual. (The only significant difference I have found so far, is that DVDA Studio does not appear like AC3 audio...)
Hint to Sony:
Those of us who cannot afford to ship a free CD across the Atlantic would really appreciate complete documentation when we buy an upgrade via download !