The Eee Note comes closest to matching your wishlist, but you'll have to import it and it will drive up the cost. I think the
Netherlands Asus store still has some in stock, but they do go in and out of stock.
But honestly, it's not a "flashy" machine when you compare it to tablets out there, and some will just find it clunky and archaic. I think some people will be better off spending their money on a good scanner (Fujitsu ScanSnap is top of the line), OCR software (or uploading to GoogleDrive that apparently will OCR pdfs for you) and just scanning their paper notes. It does take a special kind of user to appreciate a black and white, menu-driven device in this day and age.
I have just about every machine there is that could possibly fill this need, and none of them are perfect. But, I do love the Eee Note as a dedicated note-taking device.
There's a one-button "upload to evernote" option, so it's easy to get your notes off of the device. It does have a recording feature, and people have said it works fine, but I haven't tried it. (And I do question the value of recording lectures anyway.)
Getting pdfs ON to the device can be a bit trickier, since the built in basic browser doesn't play nicely with all sites. I have my own cloud storage and I pull from there. So if you have some kind of content management system used by the profs at school, you may want to access those files from a computer first, put them somewhere you know the Eee Note can download them, then get them that way.
If you do go with the Eee Note, make sure to visit this forum to get the most out of it: forum.tabletpcreview.com/asus-eee-line/ You might even be able to find someone selling a used one there.
The only other device worth mentioning right now that you haven't would be the Samsung Galaxy Note. If you also happened to be in the market for a phone, the 5.3" screen is actually large enough to take notes on. It uses a wacom pen and there are some dedicated apps that register only pen movement, not your finger/hand.
I know it's not really your ideal device, but it could conceivably do what you want it to do. There's a very handy app I use called "Soonr" that syncs with a desktop folder on my mac. So as soon as I've marked up a pdf (signed a document or whatever), it instantly shows up in a folder on my laptop. I can open any pdf (and other kinds of files) with Soonr, and I can drop files into my Soonr folder on my mac to open them on my phone. If this device looks at all interesting but you really need a full-page size, then you can follow the progress of the 10" Galaxy Note that's not out yet, but is in the works. It will give you a better stylus experience than the iPad and be just as full-featured, making it perhaps a more useful overall device than the Eee note.