I still prefer silk lift over olaplex. Maybe later will have time to type more.
Quickly my opinion: I don't feel like bumping up developers for on scalp or balayage. From what I've tested on clients with using in light balayage to lighten small yellow pieces and in toners, it left hair a bit too soft. Actually hard to curl under during blowouts.
I know most everyone, and probably all of you, will love it to bits and pieces. I'm not totally sold, but will continue testing.