Buy into the mil surplus wind proof smock with pocket sized goretex surplus jacket for when it is very wet indeed. Do a search on the hundreds of other threads on the subject, remember that it is a system and so one bit doesn't work too well without the whole system and for a few quid you are sorted. I have several of the £400 jackets and went out in the Hebrides this morning in cold mist and heavy rain and came home just now in bright sun and 19 degrees, it was the surplus wind proof smock and surplus goretex that went with me through choice and the £400 jackets simply wouldn't have done the job so well. I'm here and will probably be out on the hill almost every day until 17th October and it is unlikely i will wear anything but the surplus stuff in that time, though the big name jackets are in the wardrobe.