Its tough for us as consumers when there are so many choices and such a huge variations in price points.
I saw a "Test" by the company- without naming them- lets call them Streams East...that showed their stuff was great. I guided a guy on an all day pouring rain hog hunt and by the end of the day his rain jack weighed 10 pounds...it was soaked. I've seen guys on forums sing the praises of this stuff...and I snicker.
A couple decades ago, I owned multiple rain shells by a very well known company that made high dollar rain gear. They worked great for a couple hours...and then leaked and didn't let out moisture. This stuff had test after glowing test...but it was no where close to the claims in my experience.
IMO, A guy has to factor in what his intended use for the product is; So if its a rain shell for a 2 hour squall....just about anything will work. If you are talking coastal Alaska...thats another requirement entirely. I used that $39 space Rain when it first came out for my high country Co archery hunts and it was great for those afternoon monsoons...but it sucked for those rare occasions when we got 2 straight days of rain.
The best I've used is the Kuiu and an REI eVent rain shells for all around use. Very good cheaper stuff is the Marmot PreCip. Note; These shells need a regular refresh of the DWR outer coating to work properly. So when you are dragging through wet brush in SE Alaska for a week you WILL notice it being less effective as the brush plays hell wetting out the outside fabric. In those heavy rain/ wet brush cases, that HH Impertech PVC stuff is about the only thing that will keep you dry.
Of course, YMMV