I just tried the Airflo long Delta (7/8) on my Scott 7 wt and am impressed. I have been using the Midspey which I also like. The weights of the two lines are similar (within 10 grains) However, I notice that the long Delta Airflo lines match the grain weights of the shorter Delta lines whereas the Midspey is significantly heavier than the equivalent WindCutter. So as you go up in weight, the Midspeys are significantly heavier than equivalent long Delta. Curious if anyone has used the heavier wt long Deltas and if they effectivley load the heavier rods?