I have an iPad that I absolutely love, but it's running iOS 10.3.3 and can't be updated to newer versions. Most iPad apps now require iOS 11 or higher. And mine has gotten slow loading web pages. I'm getting ready to purchase a new iPad, but I'm not quite sure which one, either the regular iPad or the iPad Air. Also, should I go for the maximum amount of memory? I'll only be using it for email, surfing the web, and streaming. Thanks.