Yeah its like 0.05 inches (13mm) difference.
I would pick the cheapest option with the return policy on the Pro cases. This way if you don't like the feel you can return it. I purchased a Poetic pro case for my mom's 9.7 iPad. It could be hit or miss. There are a lot of people online saying no but have they actually tried it. If you could, you might try going to either Staples or Best Buy or Target to see if they have any. Then try to see if they fit.