I owned a Nook Touch for three days and took it back because it doesn't handle PDFs as good as the Kobo Touch. I would like:
1 - The ability to organize my books, pdfs, etc... into folders or directories and then retrieve them that way using something like a file system explorer. The Nook touch allows you to do it that way.
2 - The ability to "Search" for a word or phrase inside a book or PDF would be nice. The Nook Touch allows you to search within a book but not a PDF.
3 - The ability to look up a word in the dictionary from any book type. Heck I would like the ability to launch the dictionary as a separate app and look up words not even in a book, just type them in and get the definition.