I have to agree with tailingloop on the Headstart line. I use it on my 5wt for tossing blue gill bugs. I had asked Bruce Richards the same question and he replied that it's a good alternative to a BBT.

The only reason I bought Cortland was I got to feeling kind of guilty that I wasn't supporting a local shop. But I've used Cortland line in the past and they make a very good line as well.