The iPad Mini is a wonderfully portable little tablet, but at 8.2 inches, it's not much bigger than the biggest smartphones. The largest iPad Pro is huge—big enough to replace a laptop if you add a keyboard, but that also makes it a lot less portable. The 10- to-11-inch range seems to be the sweet spot for most users. If you're unsure of the size to purchase, head to your nearest electronics store. It almost certainly has most of the models on display.