Originally Posted by leebase
If you buy a book from the Sony store, you can't read it on a non-Sony device.
That may have been true before the Sony Ebook Store decided to switch to ePub, but surely not now. It's all ePubs drm-ed under ADE. Wait until Adobe finally decides it's time to release an app for iPhone OS and you'll be able to read it on the iPad too :P I use my "Sony" books fine on my Pocketbook.
On topic: at this point, I'd like it to be not-too-pricey, to have a good CS (which is quite true of PB) and a reliable OS (which was what first pushed me out of Gen3-Land