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.
Medium texture, normal porosity, normal elasticity, very weak waves.
shampoo: Redken Fresh Curls
rinse out: CJ CR, TN
jellies: UFD's CM, KCCC
gels: CJ CQ, BRHG