Using either Surface 4 pro i5 or i7 with 8gb or memory or 16gb memory is sufficient for Jaws, Word and others? Thinking long terms for blind child in HS now to college one day? Or stay with the i5 16gb and 256gb SSD? Advise? price difference can range from $300-$700 after you include taxes, extra warranty from SquareTrade, case, protective cover, etc.. Not sure if anyone here has someone that is visually impaired or at least low vision. Teenager might be using that with other apps in the future... I hate to keep changing devices if the person is 'used' to it especially if they cannot see or see well. It is not as easy to keep changing devices in the blind world.