My needs were simple, a case that would not increase the size factor of the phone and also would make the phone easy to hold (the Pixel 9 pro is slip-per-y!), and actually protect the phone during an inadvertent drop. I believe the 100% guarantee that the case will be protective in a 12' drop, I just hope I never test it. The case is easy to hold and has an 'easy-on-the-hands' feel that allows for a secure, comfortable grip and still has a great size factor. My only complaint might be the price, ouch! Even getting a sizeable discount still made it expensive. But so far it does what it is suppose to do, protect the phone and improve handling - A+ on both accounts.
This case is too slippery. It has no texture to it to be able to get a good grip, especially if your hands are even slightly wet. It shows fingerprints. Which is another drawback. It needs some texture to it for me to give it a better rating. I ended up getting a different case.
The matte-black Tough Case fits the Pixel 9 perfectly. It has proven itself by protecting the phone through several "dropped phone" events. The protective screen covering is equally durable, and in the unlikely event the screen cover is broken, a spare is included with the case.