I am currently using Apple iPad Air 16GB space grey. Ipad air is an amazing tablet in the ipad series, it is a value for money deal. it comes in 2 colours silver and space grey, wifi/cellular wifi.
its a 9.7 inch retina display, it is very light in weight and has an amazing design, i personally feel that Air has the perfect size.bigger than the ipad mini series and smaller than the ipad pro( 12.5 inch) which is too big and difficult to carry with you. most of the bluetooth keyboard companies provide keyboards for I pad air, which makes it easier to use it as a laptop for business and work purpose. By far it is the best ipad which one should use with the perfect specs and design.