Another one to consider if you're looking for a high gloss, wet look finish;
http://www.waxamomo.co.uk/index.php?app=ecom&ns=prodshow&ref=pbwdsgNo customer reviews on Waxamomo site, but there are some on Clean Your Car website;
http://www.cleanyourcar.co.uk/glazes/poorboys-white-diamond/prod_551.htmlI've not used this product before, but I have used the equivalent for dark coloured cars (Poorboys Black Hole) and was really impressed with the glossy, wet-look finish it gave.
As Steve30 says, preparation is the key, as the products will adhere better to the paintwork and maximise the effect of your hard work. When I used BH, it was after washing (2 BM), towel drying, claying, rinsing and 2nd towel drying, polishing. Glaze then applied and topped off with a good wax to seal in the glaze.
Can take quite a while, but the end results are worth it, but be prepared for the usual comments from the neighbours; "you can do mine next", "you cleaning that car again?", "you'll wash, the paint off", " you'll make it rain again"........................