Almost all my fishing now is stillwater. I use FC almost all the time for leader and tippet. I use Berkley Vanish and Berkley Transition...also Berkley Trilene Pro Grade furls very nicely.
If I remember correctly the Seagar line is a little more in cost than these but don't remember for sure and I don't remember if it comes in the 2# and 4# which is what I use.