It seems to me that it would depend on what you're aiming to do. Do you have moderate to severe hair breakage? If so, then you need a protein reconstructor, like Ahpogee or Keracare Super Reconstructor. Do you want to add more moisture to dry hair? If so, you may want to try a moisturizing conditioner, like LeKair Cholesterol conditioner, Mizani Moisturefuse, or Keracare Humecto. If you want something that is in between, you may want to try Affirm 5 in 1 reconstructor or Mizany Fulfyll (sp?).