You are not the only old timer here.  I walk miles a day in the Pacific Northwest.  Nothing beats good 60/40 cloth for breath-ability as compared to the newer breathable fabrics.  I walk at a minimum of four miles an hour for at least five miles and consequently I sweat.  No mater what I wear, I am going to get damp but with 60/40 cloth I don't get totally wet.
My wife's friend's daughter works for a major garment manufacture and I get to test a lot of high end rain gear and jackets.  The best success I have had is with garments that have a large number of vents.  My favorite has more zippers than you can imagine.  However in a blowing down pour, I have to zip some of them up to keep from getting wet from driven rain.  I would sure like to try some jackets made from ventile.   Until I find something better, I will stick to my old 60/40 anorak.  I spray it after washing with Snow-Proof from Fiebing Co.  It is odorless.  A little goes a long way.  A small bottle lasts for years.