OK, I'm seriously thinking about upgrading my 600 to the 650 after playing with one for a while today. The screen is fantastic on it compared to the 600. My question is in regards to Bluetooth. I already have a bluetooth keyboard on my macintosh. Can this keyboard be used with the 650? It would be awesome to be able to use a nice full size keyboard when I wanted to. Are all bluetooth devices able to be used with it, or are drivers needed?