I've never tried the SM but love the Repair Me! My hair is a little picky about protein but has no problem with this one. I've had my bottle for nearly year and since I rarely do PTs, it's still mostly full. I've also used it as a protein heavy rinse out and my hair does fine.

I find it very moisturizing for a PT; I never get that hard feeling after using it. Plus, it smells good.
Coarse texture, normal-high porosity, normal elasticity (Komaza Care), very weak waves
cleanser: Redken Fresh Curls Shampoo, CJ Daily Fix

rinse out: GVP Conditioning Balm, CJ Repair Me, CJ Smoothing

jellies/creams: CR Curl Maker, KCCC, UFD Curly Magic
gels: CJ CQ, BRHG