You typically don't expect to get a good camera in a notebook PC so the 12.9-Inch iPad Pro only has a 8 megapixel back camera while the 9.7-inch iPad Pro supports a 12 megapixel back camera similar to that found on the iPhone 7.
One of the best features on the 9.7-inch iPad Pro is the quad-speakers which provide a surprisingly loud and clear sound similar to the 12.9-Inch iPad Pro although with less bass.
The initial setup screens for the 9.7-inch iPad Pro are similar to other iPad models.
One of the nice things about using the 9.7-inch iPad Pro and 12.9-Inch iPad Pro compared to traditional PC notebooks is their portability and convenience to use them anytime during flights (at least in the USA). Also, in a world being increasingly dominated by Apps that only run on iOS and Android platforms, the iPad will continue to grow in popularity.