In reply to Glyno:
> I worked in outdoor retail for years and talked to many manufacturers and suppliers. It's long been my opinion that the Goretex myth is a miracle of marketing.
Is it still the case that you can only buy Goretex from Gore if your seam sealing and design dept. passes their QA procedures? I know that this was the case up until at least the mid 90s. I am pretty sure now though that it gets signed off purely on the basis of the seam sealing technology being used at the buyer's site and does not account for design.
> hard, driving rain - not so good
This I feel is totally a design issue and nothing to do with the membrane being waterproof. Bad garments let water in and also some face fabrics appear to inhibit the breathability when they are wetted leading to the appearance of the jacket leaking where wet.
> breathability? - very slightly better than a cheap pack-a-mac, though if you've just shelled (no pun intended) out £300 then your perception will be that it MUST be better.
Not at all. I have in warm, but changeable conditions, on long trips even washed base layers and dried them while wearing them under a jacket or with pants in internal mesh pockets or just tucked into the chest.
There are a number of issues as to the breath-ability working, and how well, I think. One is mentioned above. Poor face fabrics will act as a seal when wetted out. Another is fit, baggy jackets just don't seem to breathe well and a big loose 'flap' at the bottom or a hood you can't cinch just seems to make a condensation point and this will creep along to where it does touch inner garments. Better linings stop this to some extent but make for heavier jackets. Environment is massively important, humidity, air pressure, wind and dirt lead to some membranes doing better in a situation than others all things being equal. The other factor I think is activity and fitness. I think if you have a jacket that is keeping most of everything out but the wearer is unfit and getting hot and sweaty then taking long breaks the moisture just doesn't get pushed through and condenses in places as they rest. This seems to be worse when they open the jacket to cool off regularly. A constant rate of perspiration and a fairly static internal environment seem to work well for hour upon hour of even high activity.
On a couple of occasions I have worn a pac a mac type cape for a couple of days when it was unexpected we would need shell garments so went very light. It can be bearable if you aren't carrying a pack with a waist belt. I was and I had puddles form there.
> Apart from summer when I use a basic £80-ish jacket in the rain, I tend to wear Paramo. Technically not waterproof, though it keeps me drier and far more comfortable.
I've found some Paramo stuff(I've tried a number of garments people have lent me when I have visited them) to be awesome for one day out. Backpacking, or not being able to dry it totally over the night and they were quite horrid. I felt like everything I tried I would never get dry once it had got severely wet. All the Goretex/hyVent/eVent stuff I have had over the years has been able to be "walked dry" fairly quickly.
I honestly don't think it is a price perception thing. I've had a tonne of jackets over the years and I have had some I have been outstandingly happy with and others I thought were a waste of money. I wore a (2nd generation) Berghaus Alpine Extreme for years. These were the only jackets I ever felt worth having repaired multiple times. That along with one lightweight ME jacket I had I'd consider to be pinnacles of multi-purpose jacket design.