I do not think you can go wrong with either one, I have the Showers Pass and it is excellent, I also have some Arcteryx products and they are outstanding also both worth the hefty price tags because they not only work but work well. The only consideration you might want to think about is, if I recall correctly the Arcteryx rain jacket has a hood,which would be a deal breaker for me on a bike, unless it is removable.