2009 Pontiac G6 What type of gas would be the best?

It is designed to run on 87 and the manual states 87 or higher. After doing my own testing between gas types I am only going to use premium 93. The car seems to run better all the way around. Also, my old car was a 92' Pontiac Sunbird 2 door SE V6 3.1. When I had the engine taken apart at 90,000 Miles they replaced all the seals etc, but they told me the engine was clean enough to eat off of and that they expected me to get 200,000 miles out of the engine. I later sold it at 130,000 but never ran anything but premium and I believe that helped.

Hey thank you very much. I just wanted to make sure above all that it wouldn't hurt anything. Since I've heard so many strange opinions it was really bothering me. Friends that work on their cars all the time that say "If it says 87 or higher you will hurt your car going to 93" Yet my father who was a mechanic for some time during his career says you should use 93 if you can afford it due to the cleaner running and possible better performance.

It's honestly a load off my mind to know it's going to be fine because I really do feel that the car runs better with more response from the gas petal with premium. Thank you for your time.