The S.A. Mastery Headstart Headstart line has a taper that is very similar to a bass taper and at $35 is a bargain. It is marketed as line for novice casters but it works well tossing big flies. I recall seeing Bruce Richards of S.A. write that it makes a good bass bug line.

The new Cortland 333 Bass Taper seems to be nice line also and is $35.

The Rio Mainstream Saltwater line has a taper based on the Rio Clouser line and also runs $35.