Certain iPad buys are better than others.
iPad 1: Basically a prototype that didn't have enough power, bad buy
iPad 2: Fixed what was wrong with the iPad 1, pretty good product, good buy
iPad 3: Basically an iPad 2 with retina screen without much improvements in power to run the screen and effectively the redheaded step child of iPads, bad buy
iPad 4: Dismissed at first as nothing more than a lightning connector, then found to have fantastic power to drive the retina screen and then some, good buy
iPad Air: More processing power but still gimped with 1 GB of RAM, bad buy
iPad Air 2: Will have 2 GB of RAM and not have any issues, good buy
iPad 1: Basically a prototype that didn't have enough power, bad buy
iPad 2: Fixed what was wrong with the iPad 1, pretty good product, good buy
iPad 3: Basically an iPad 2 with retina screen without much improvements in power to run the screen and effectively the redheaded step child of iPads, bad buy
iPad 4: Dismissed at first as nothing more than a lightning connector, then found to have fantastic power to drive the retina screen and then some, good buy
iPad Air: More processing power but still gimped with 1 GB of RAM, bad buy
iPad Air 2: Will have 2 GB of RAM and not have any issues, good buy