My problems with changing are 1.the expense of dropping lines to the 4 additional exam rooms in an old building I only have 1 year left on lease (property management will not cover this) 2. either plugging and unplugging the lap top in and out of the room or 3. buying 4 more computers to cover each of the exam rooms. I know these are trivial but I like the ease of moving room to room with the laptop and have thought about trying a tablet.