My iPad 2 won't recharge despite a new charger. It's several years old so I think it's time for a new iPad. Separate post about that coming up. I'm looking for advice. I see Air, Pro, etc. I had iPad 2 with 16mg ram. I'm seeking a similar one but maybe a little more memory. What does each do that plain iPad doesn't. Budget of $600 roughly. I have a mini but with my bad eyes I have trouble seeing the tiny letters Thank you. Guess I should mention I'm a Windows person and iOS is still new to me. I have amnesia so the easier to use the better.