I got my rover from my parents as my first car. When we first got it we had several repairs that would require fixing. Lucky we were part of a Land Rover Club (which I recommend for all Land Rover owners to find) so we got the parts cheaper and installed by members for no charge. So all I can say is just be ready to work on the Disco if you get one but it is worth it.
The sound system is awesome all but the bass in the back are stock and running find. The OFF-ROADING!
Redo the ABS system because it does give problems. Also the 6-CD changer could be in a better spot beside underneath the front-passengers seat.