I am planning to buy an iPad for academic use [will use it intensively - around 8 hours a day ], undecided whether to go for Air or rMini. Will be grateful if you could help me to choose. 1. Which is more comfortable to hold and read? [trade off : Air's size good for eyes, weight may be not] 2. Does Air or rMini get warm making it uncomfortable to put on the lap or to hold it? 3. Is the glare or reflection from the screen too distracting or painful?