I have 8 Airflo Delta mint green lines 9/10 of which 5 are still NIB, and 2 have fished a little, one was my main line. I have 5 Airflo Delta mint green lines with the tips.These Airflo lines are made of PU and do not break down like the PVC lines. I have fished Airflo for many many years. With proper care they last a long time. They were the best lines Airflo made. I was sick when they stopped making them and bought ever one I could find.
I also have the Airflo Delt Longs. After teaching spey casting through Poppy's Redshed Fly shop I have now retired.
Jock Monteith in Scotland marketed the Airflo lines with his name. I have a dozen of his lines too. They have the tips.