.02 cents worth for Stew--
This is one place that teflon doesnt work---well--. It doesnt 'flop' as well as a 701 hose, because is has a memory. We played with it several years ago with Team AeroDynamix and just couldnt get it to move without a 'bunch' of nose weight. WE even tried it with just the liner, and it was just no cooperating. Thought about making a live swivel joint to allow the movement, but put that idea asside for a while (6 years).
So 701 hose is generally used---even though it does need to be checked/changed at intervals.
Tom