not meaning to bash at all I like airflo but I have had problems with 2 airflo lines as well, one cracked over time and broke and the other split while basically brand new and in the end broke. Both completely different lines...... but on the upside while they lasted they both casted awesome.....
I like highend SA they cast nice and they last a while which is all I ask for so I use them for the majority of my fishing.
I will be getting my airflo 40 plus line replaced as soon as I dig it out of my gear and send it back in. I was told perhaps I had recieved an old line and that they had a different coating process now or something along those lines. The company has good customer service or atleast they have had with me. And some of their lines are really good the 40 plus was my favorite streamer line and likely will remain that way once I get the new one.
I also had a rio line that wore down a bit too fast and a cheap SA line that wore down a bit too fast...... I like to usually give the benefit of the doubt to the line companies as sometimes its the products fault and sometimes its the fishermans but for me the 40 plus line is the only higher end line that ever failed really really quick in like 6 trips or so. The rest have all been more economical lines and I feel should not have been expected to last as long........ I am just happy if I get 6 months outta a line and considering its use it is unfair to expect any line to last forever