Hey all, I know that the MX900 is one of the most popular mice here, but here is what I don't get... What is the point? I realise that the 900 has bluetooth and the 700 doesn't, but both have the dock, which acts as the bluetooth dongle, right? Both mice have the dock/charger plugged into the USB port, it's just that the 700's also acts as a reciever, right? So really they have the same amount of cords, take up the same amounts or ports, everything. I am probably (and hope I am wrong), so someone correct me.