I have found eEvent limited in terms of windproofness - anyone else found that? Or is Goretex, or others, the same?
Sorry, but this is just rubbish. Are seriously saying that you can detect wind through an eVent jacket? The real issue with all these things is twofold, one is the limited durability of DWR - water resistant treatments - and people's inability to care for their jackets properly, the other is unrealistic expectations over their breathability.
Gore-Tex fwiw is not detectably more waterproof or more windproof than eVent, the PU layer is a very thin smear which is there to protect the eptfe membrane itself from contamination by sweat and other, erm contaminants, it doesn't have a waterproofing function, though it does limit breathability.
Anyway, the bottom line is that working hard, no waterproof fabric, no matter how breathable is going to cope with the sort of sweat output you can produce. Even with significant venting.
Some people do seem to have issues losing heat with eVent when stationary. Its becauce you don't get the familiar Gore-Tex fug building inside your clothing system. Anyway, I'll leave you to make up some more groundless stories about different fabrics...
I found, for example, that I could suck coca cola through eVent fabric, but this wasn't feasible with Gore-Tex and that Pertex was more breathable than cotton and more waterproof than solid PVC sheeting, though this changed when I washed it in Persil Automatic etc.