Force Feedback is sometimes a good, sometimes a very bad thing!!!
Many aircraft aren't configured correctly so perhaps your joystick is shaking left and right while you're flying a (fly-by-wire) Eurofighter..............

But of course this can be fixed!
I personally wuld buy a Thrustmaster Joystick, I myself have a Thrustmaster Fox II Pro, which is wondeful!
Here some tips:
You DON'T need AS MANY controls as possible!!!!!!!!!! This just makes it harder to find them with your fingers on joystick while flying!
But you ALWAYS must have these:
Every new joystick should be USB,
X, Y axis every joystick of course has,
if you don't want to buy one with a big throttle on it because of the big price,
you should make sure you have a small throttle control at the platform of your stick.
No Z-axis in FS???? Impossible! This are the rudders.
One very important thing: Every joystick has a spring in it to make sure the joystick rolls always back to center after you've turned it. This spring should make you feel that it'll live very long and don't get to weak to fast. And look for a stick that allows you to change how strong the spring is!
The platform of the joystick needs to be large or very wheight to amke sure the joystick has a good stand.
Hmm I think that's all.
Ah no!!! One very important thing:
You MUST have a 'coolie hat'!!!!! This is a small mini-stick on the stick

you can turn the perspektive around.
I myself don't like Saitek, they seem so ramshackle

Sorry for my English, but I hope I helped you!