Which one is more suitable Samsung Kies or PC Studio for Samsung GT-B7722?
According to the Download Center, Samsung PC Studio does not support Android Phones (though I did not try using that), and it directly points to download Samsung Kies.
Also, Samsung Kies - as far as I can say - is easier to use, with ability to connect to the device via WiFi as well. Therefore, I would recommend using Samsung Kies.