Hi guys, am going to college (uk) in September for a levels In further Maths, physics and german and need a new laptop. This will last me for about 6/7 years as will also use it for an engineering degree. I would like something relatively light, but will mainly stay at home. Have been looking at the 13 inch air with i7, retina MacBook pro 13 inch with i7 or retina MacBook pro 15 inch. Have heard that the i7 air gets very hot though so what would anyone recommend? Thanks.