I've found the Excell lines to have way too much memory for my liking. Silver Thread is a great low memory line with good break strength and small dia for test weight. Don't know much about the current crop of "Super Lines", still have a few bulk spools of 8 and 16 pound test Silver Thread, and AN 40. I'm still using line that I bought 15yrs ago. My spools have been stored in a cool dark place. Seem to be in as good a shape as the day I bought it. I don't necessarily recommend it, but I'm using line that's on reels stored in my boat's rod box that's 3 yrs old. Still casts fine, and if it's weakened any I can't tell. I don't think mono degrades as fast as the line manufacturers would like us to believe.
Savage