I likely wouldn't have found this place if I hadn't been having an awful time syncing my new reader. So thanks for that, Sony.
The PRS-650 hardware itself is quite nice I think -- it's just the software (on a Mac) that makes me want to kill something. I ended up using Calibre to add books to my reader. The Sony software just wouldn't do anything but spin its wheels after the first forty or so books -- there was no way to stop it from trying (and failing) to sync and no way to turn off auto-syncing while it was syncing. What a pain.
But I'm happy now with Calibre, and here I am, ready to learn new things