I have used Maxima UG and Trilene Big Game with good luck.

At the begining of this year, I tried Maxima Crystal Ivory and really like it. I am currently switching all my reels over to it. It works well for leaders as well as mainline. The price is right also.

I don't normally use a spinning reel, so I can't speak for it as a spinning line but for baitcasters it is a very good line.