Waterproof trousers can be a hard one to choose, but very easy once you know how. You need to first decide what you will be using them for as this could mean the difference between being comfortable or wet.
Most Brands will have their own waterproof fabric, for example The North face has Hy-vent, Berghaus have AQ [Aquafoil] and Sprayway have HydroDry. All of these waterproof trousers are fully waterproof, Taped Seams, Windproof and breathable. In the short term and general wear will have no noticeable difference to a higher priced Gore-tex trousers
Gore-Tex waterproof trousers will more beneficial because they use a Laminate technique to create the waterproof fabric; this is regarded as a more durable and better waterproof performance over a longer period of time and on a windy day with driving rain. The durability of the trousers will be higher as well.Now if you looking at the possibility of a type of trouser similar to a walking trouser. The Sprayway all day rain pant. These are perfect for that couple hours walk through a forest or walking the dog.