Going off on a slight tangent ... but I've always been under the understanding that the layers underneath the jacket are more important than the layer on the outside. Most jackets will either
a) leak when the outside pressure exceeds its tolerances (ie cycling into a gale force wind)
b) fill up like a kiddies paddling pool with sweat ...
Back in the younger days the standard bush dress to go tramping was a wool undershirt, a jumper a big heavy woollen "bush shirt" and a PVC waterproof to chuck on if it really started belting down (or the wind got up a little).
Obviously the rest of the attire consisted of shorts (cause legs are waterproof) and some woollen socks.
In fact we did both the Annapurna circuit and Everest base camps wearing the same without bother.
Along came Gortex and all the others with their millions of dollars of research and tried to outdo it all ...
Ok, so its lighter thats a given. But I still swear by the woollen undershirt (icebreaker) Woollen jumper (mums christmas special) and a jacket to keep the bulk of the wet out. If it leaks ... no dramas the wool keeps me insulated until it drys out again, and if I actually work up a sweat ... it wicks it all away.