I have used the quatro tip line for the last couple of seasons. I find it quite simillar to the windcutter, but I believe it has a better loop to loop attachment than the wincutter, it doesnt catch in the tip ring like the windcutter sometimes does. It is a good line for medium or smaller rivers and I find it usefull in situations where you have to do a lot of handlining. Was it Airflo who you saw discounting the line? I got in touch with them last friday to obtain one as a back up, but they had already sold out.