I voted MGS.
Because you can rip in, guns blazing if you want.
"The Thief" series! Back to the roots!
"Metal Gear Solid" series! Go superhumans!
"Splinter Cell" series! Just three green dots in the dark!
"Hitman" series! I always wanted to see a killer wearing a chicken mascot costume!
That other game you forgot to mention! (please post the name below)
I hate sneaking! Just storm in and kill them all damnit!