What’s the Difference Between the iPad, iPad Pro, and iPad Mini?

Apple’s iPad line has gotten pretty hefty, between the 12.9-inch and 10.5-inch iPad Pro, the (blandly named) iPad, and the iPad Mini 4. They range from $329 all the way up to $1279. So what’s the difference between all these models? Let’s take a look.
by Harry Guinness via How-To Geek