Alas, staying dry in the saddle is the perennial Holy Grail of Cycling, never to be achieved. Think about it this way maybe. We have water in motion coming at us from every direction and we are simultaneously generating water on our skin surface through physical activity. The very technology that might keep us proof against 360-degree blowing rain will also create a moving cyclist-scented sauna. In this context (as others have addressed) the charms of Gore-Tex are quickly defeated, although in other contexts it’s good stuff.
I have found over the years that concentrating on defense against water-induced hypothermia issues is a more realistic, achievable, and important pursuit than water-proofness. Advise you embrace wetness as your birthright*, concentrate on a stable core temperature, and work on getting dry at your destination.
* - We are a water based biological phenomenon after all.
Last edited by Billy Bones; 01-26-08 at 11:29 AM.