I bought the new mac book air mid 2017 this year in july and it is very much user friendly its processor speed has also bee tweaked. yes, the processor has been tweaked up from 1.6 GHz to 1.8 GHz and nice classy look has been given to it . and wonderfully done doubling the default memry from 4 GB to 8 GB and although not much but there is an improvement . as the brand itself hold a repotation so the apple is known for its quality and its my own experience not only with my system but friend"s also, I have personally never seen it hanging it always run smoothly. as cost indicates itself nothing to say about value for money as it gives full performance with its full potential. and at last coming onto serrvice and support although not having much service centers but the speed of service is faster than others.