I've never tried the sci angler or wulff but I've had many Cortland lines. I guess I stuck with them for so long because their customer service was good but I'm off that project. AirFlo all the way for me. Fred, try the 40+ lines, you'll never look back. I use one of their full clear int for better presentation but since my cast is nothing to write home about the integrated heads get my vote.
As for the 5wt. I've got an AirFlo floater that I'm very very pleased with 7000 series I think.