Verge shares an excellent & in-depth review on how to pick among Apple’s 5 new tablet offerings:

https://www.theverge.com/ipad/2019/3/30/18282499/apple-ipad-mini-air-pro-comparison-how-to-choose

Currently, Apple sells five different models. In order of most affordable to most expensive, there’s the 9.7-inch iPad, the new 7.9-inch iPad mini, the new 10.5-inch iPad Air, the 11-inch iPad Pro and the 12.9-inch iPad Pro. Thankfully, your odds at picking a good tablet are greater than 1 in 5. Each of them is a really good tablet in its own way, but it’s important to find the right tablet for you.

What does the “right” tablet mean? A lot of things. The right size, the right price (and not paying more or less than you should), the right amount of power, and compatibility with the right accessories.  The more that you know about each iPad model ahead of buying, the better. So, we’ve laid it all out, drilling down and explaining each tablet’s biggest selling points and drawbacks, starting with the most affordable option.