We bought a washing machine recently - we ended up with a Bosch one, mainly because it used 11 litres less water per wash than the hotpoint one. It also uses less electricity - and seems to wash a bit better than our old hotpoint as well. Sharon spent quite some time crawling round the floor in the showroom trying to read the efficiency data on each model; why don't they stick that data on the top ?!
It's getting good usage now - Jamie gets through quite a lot of nappies, and even factoring the cost of the washing machine into account, we should break even inside 2 years now that we have reusable nappies.