Ok first of all I have to thank my sister for being my sister and working for Logitech . As you can see at the picture above, it's a big one. The logitech is about 10cm wider as the Microsoft version. But you get a lot more buttons and possibilities. This means that you experience disctinct and highly accurate game sensation.
Force feedback is the technology which enables the joystick to give efffects to the player.
Things like hitting a wall when you are racing you feel the joystick vibrating. And when flying in a spaceship and you fire you blaster, you feel the shots. And when shooting a rocket you feel a different feedback. Of course you get an drivercd with I-Force immersion. I-force is for programming the joystick.