Not an ad, not posting link but after extensive research, I decided to try the Living Proof Triple Bond Complex. Prepared to pay the full price of £42 for the 45ml. Typed it into google to see who sells it and Amazon came up at £28.28! (£26.87 if you subscribe and save), and that's for the full size of 45ml.
I've seen many of you rave about it on here, so thought I'd pass along the savings :)