You want two things then, a waterproof shell and some sort of midlayer
- that was the plan xD My figuring on a 3-in-1 jacket was simply convenience.
Is the hydrostatic head worth worrying about?
I was considering a 10000mm (2000mm breathable) soft shell from Cox Swain (£47...ish). I think it's technically a ski jacket, but given that I might spend a week in a downpour that might not be a bad thing: except it's not as breathable as a lighter jacket.
Having a look at the Marmot Precip/Rab Tempo/Bergaus RG-1 just now - will get back to you soon! =]