For some of the books (like the basic rulebook), I will probably get both, for others (like fluff books) I only get the PDF. While I like the PDF, for instance for character generation (like for PbPs) or for reading at work

, when playing at a table I prefer to have the book, as it's easier to quickly look something up in. I'm probably old-fashioned that way, but I can find most things in a book much faster than in the PDF of the same.
I also don't need those codes, as I don't play SR online, but I can understand that some people would want them with the PDF. A compromise (something we Belgians are very good at

) might be to include the code in the PDF, but if you use a PDF code (they can make the two different fairly easy I assume) you have to pay a little extra to get your item. That way the people who want the item can still get it from the PDF only, but they won't get it for free as if they would have bought the more expensive book.