Are you after an "all weather" cover or just a cover to keep the dust off indoors?

I have a factory Lambo cover for my Gallardo, but I only use it occasionally for indoors use. For outside, I have been using a Gallardo "Weathershield" cover from Covercraft UK for the past three years. It is extremely light weight and easily folds up into a very small size. I think it is excellent - I am very happy with it.