I have a number of the original Scientific Anglder Striper intermediates and they are a great line when the weather warms up but become very stiff and prone to bunching when the thermometer drops.
Recently I bought the newer Surf version of the line in a #7. I have used it for trout down south when there was ice on the ground and for impoundment bass on stinking hot Brisbane days. In both instances the line was outstanding - supple, smooth and easy to shoot.
The full title of the line is Striped Bass Specialty Taper Fly Line, Slow / Sinking Type 1 - Surf.
Matuka