I spoke with the Raven rep today and that he told me that he only runs Raven Main Line on his float reels (and never ever told anyone to purchase a different line). Not only that, but one of his customers landed a 54lbs Chinook in Alaska using Raven Main Line - and any line that can take that kind of abuse has to be awesome!
I find it funny how things can get posted on the internet and be taken as the truth when it really boils down to a bunch of crap. I've fished all kinds of lines in all kinds of conditions and I find that in the WINTER nothing beats siglon F, but raven fishes fine until the temp drops.