I have never played a Metal Gear game, and yet I find myself kind of obsessing over it. I absolutely love the music, and despite the convoluted plots that go nowhere until suddenly being drawn from the back drawer for MGS 4, I find the setting extremely compelling for how much stuff gets crammed into such contained stories.
If I were to start with the Series, where would be better for me: Metal Gear Solid 3, or Metal Gear?