SAGA isn't waterproof, yes its like 20K which is pretty good but not "waterproof"
once you get into the 3 layer eVent and Gore-tex or Gore-Tex pro's is when phrase's like "top of the line" or "best of the best" can start being used. Saga is just a really heavy jacket that is designed to look good, keep you warm, and kinda dry.
Companies like Arc'teryx, Stotic, Norrana, and Westcomb, make the serious riders gear, SUPER LIGHT WEIGHT, i just got a pair of Westcomb touring pants with full leg vents, and it weighs NOTHING, but its 3 layer eVent meaning its insanely waterproof, but also breaths.
This is a good source to get an idea of how much more quality control goes into Gore-tex and eVent.
http://www.sierratradingpost.com/lp2/waterproof-guide.html
WATCH THIS VIDEO, this shows just how much more breathable eVent is to Gore-tex SO COOL
http://www.youtube.com/watch?v=yi0DaHQ5ro4
but yeah, alot of companies like Armada are featuring eVent in some of their products. Armada did that this year with Inverse. I have this jacket and so far I LOVE IT!!! i haven't used in a skiing setting yet, but from wearing it around, and in the rain ITS GREAT!! Armada is also doing the tracer, which doesn't use "eVent" name brand, but i've been talking with Tyson Hall, and he said its the exact same thing.
Ferrari