Whilst my old waterproof trousers are ok for short rides they are not at all breathable, they also don't have articulated knees and they rubbed a little on my ride out to the farm shop on Friday. On a longer ride I would be just as wet from the inside as out. They were a bargainous 20 pounds about 7 years ago so I can't really complain. I think I will do some research on some better trousers in case I decide they are worth purchasing...maybe after Christmas.
I like the look of the Gore ones, though not the price but due to my exceedingly sporty thighs I need to find somewhere to try them on and check the fit. Mmmm kit shopping.