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: CJ Repair Me, CJ Curl Rehab, CJ Smoothing
leave-in: SCE Curl Cream
jellies/creams: UFD's CM, CJ CCCC, SCE FSG
gels: CJ CQ, BRHG