I have the keyboard 3G Kindle, and adore it! Would love to get the paperwhite, but me previous touchscreen ebook reader (Sony) left me less than impressed with touchscreen readers. For fast readers, all that "swiping" to turn the page is annoying and fatiguing. If they bring one out with the little clicky page-turn buttons, I'm in! Better yet, hoping they upgrade the keyboard to paperwhite technology.
BTW, does anyone know how many books a keyboard can hold? Mine currently has 500+ (which has slowed it down) but it still says it has 2,383 MB free.