If you have a K1 that works and is still in perfect condition is there any real reason to upgrade to the K2 or DX? Is there any evidence that Amazon will 'cut off' K1 owners and stop making books for us? Looking on ebay I see K1s selling for $100-$200, I could sell it and cover part of the price of a new one. However, other than the drive to have the newest cool toy is there any evidence that a K1 owner should upgrade if they want to keep reading?
