So when after around a decade my Patagonia Specter was beginning to lose some of its DWR, I bought a RAB rain jacket made of Pertex Shield. Tested it in a downpour walking the dogs. Not too bad. First time out backpacking with it, slept in a cabin on a mountain top (Mt Cabot - 4K footer in NH) and awoke to plummeting temps and a rain/ice storm. Slow and dangerous going getting down off the mountain. The jacket kept me dry, mostly, but not much DWR - no beading, just wet on the outside. Cancelled the rest of the hike and boogied back to the car in about 10 hours, wet but happy.
So treated the Specter's DWR to get through the season, and my bro gave me an M10 for Xmas. Awesome DWR - no beading, because even the beads won't stick to it. But wish it was a little longer like the Specter.
And after reading Dandy Dan's post, well ....
Will use the RAB jacket maybe for walking the dogs or something. Would not sell it to anyone for backpacking.