Buy If You Want an Affordable iPad with a Big Screen
If you want an iPad with a big screen but you don't want to pay top dollar, think about going with the iPad Air over an iPad Pro.
Apple's iPad Pros require a huge investment. For $300 (or more) less, you get a brand new iPad Air 3 with a great list of features that will, again, allow you to hold onto it for many years to come.
Also note that if you need cellular data, it costs $150 to add cellular data to an iPad Pro, but it only costs $130 to add it to the iPad Air 3.