Ipad Air Wifi Or Ipad Mini Or Ipad Air Wifi + Celluler
What do you need it for? If you are mostly inside office / home then you definitely don't need Cellular. Just the wifi version is enough. If you want it for casual gaming/browsing/movie then don't go for ipad mini as it is only a little bigger than most smartphones. I have a wifi+ cellular but I haven't used cellular ever. Also, the storage size is a major deciding factor since price increases exponentially for iPad. I have a 64GB version but haven't used more than 5GB till date. Let me know what you need it for, that will help decide better.