J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Revisiting Head Foils

It looks like I may need to replace the Tuff Luff on Rhapsody soon. The one I have was installed in 1996 and is split about a foot from the top. It appears that there are 3+ options that have been discussed on the forum previously. They are:

Schaeffer Tuff Luff 1706 http://www.tuffluff.com/specifications.html
0.17 lb/ft
or Tuff Luff Aero A-1706 http://www.tuffluff.com/SCH183_Aero_sellsheet.pdf
0.15 lb/ft

Head Foil 2 (HF2 40 I think) http://www.headfoil.com/prod01.htm#1997
0.12 lb/ft

Harken Carbo 7001.12 http://tradeonly.harken.com/pdf/4281-lr.pdf
0.162 lb/ft

From class rule 5.8.1.2, the max fore/aft dimension allowed is 31mm (~1.22")

My sails have #6 luff tape and that won't change!

What are people's latest experiences with the different options available?