Nobody has said it yet so I will:
VITON!
Forget the OE stuff, unless you want to change return lines every couple of years.
Viton will last a half decade or longer.
Search for that word on the forum or google if you want VITON
Forget that Napa stuff. Forget clear hose if you want a material that will last.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!