J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment luff tape

I am replacing the head foil on my boat, and am wodering what the difference is between the Tuff Luff & Head Foil 2 systems. Head Foil 2 seems to be what the boat came with, and I can probably replace just the extrusion if I go with that system, vs. total replacement if I go to Tuff Luff.