I have one of the older models. I believe it's around 4 years old. Not sure how much they've changed since I got mine, but I've got nothing bad to say about it. I've only used it on a handful of occasions because I prefer to pack a tent, but it's a solid piece of gear and it'll keep you dry and comfortable.
The older models used eVent material and the newer models use 37.5 (used to be called Cocona) material. Not a lot of info regarding breathability and longevity about 37.5 so that's what keeps me from trying one of the newer models out.