Can anybody give advice on the best electric Power Assisted Steering Pump. I've read people say the Astra and others suggest the Citroen Saxo pump. Also I believe its only the early ones that have internal pressure regulation to reduce the pump pressure until turning the steering. Clearly the later ones need a CPU in the original car to be able to regulate the pump pressure. Which ones are the quietest, any pros or cons? Or is it better to get a more modern pump with a steering angle sensor switch? If anyone has experience I would be very grateful. Thanks guys.