For a line that's a little heavy and designed for general usage, I would suggest the SA GPX, or the Rio Grand. Both are designed to fully load faster rods.

My choice would be the SA XXD (old Distance taper) or Cortland 444 Precision Trout Stillwater. Both of these have a front heavy shortish belly with a 20+' rear taper. The SA line has the longer total belly and longer front taper. The Cortland line has a color change at the 30' mark for reference.