Re: I've been thinking about playing....
I can't speak for E:D because I never play online games, however the experience should be vastly better with an analogue joystick. I'd recommend the Thrustmaster T16000M (thirty to forty quid) as it has accurate hall effect sensors.
Playing oolite (free, Elite like game) with an analogue joystick to dock is so much easier than the keyboard it's a pleasure - you can match rotation speed with the station precisely and guide your ship gracefully in.