Just thought I'd tell you all about agreat finishing german wax called Glanz wax. The finish is superb and has a deep finish and feels like glass that really shows off the metallic finish. At less than a £10 I think it leaves more expensive waxes standing. It took less than 20 minutes to do the full car (including the roof) and it looks as good asashowroom finish. The company claim it should last between 3-6 months so that can't be bad too.