I'm looking for a waterproof top for fell running and was thinking of spending around £100 on a Concurve goretex jacket. However I've been advised to get a Pertex top e.g. Mardale Aerolite instead because goretex isn't breathable enough.
I live in the peak district and it's always pi**ing it down but I tend to run hard so would be prone to overheating.
Any suggestions would be welcome.