I really don't care for any brand of pepper foam for several reasons, one the bad guys can actually scoop it off of their face and throw it back @ you (seen it happen), two the foam doesn't have the spraying distance of a stream spray (which is very important), three one of the things that make OC so effective is that it is inhaled (thus effective the respatory system) foam really doesn't have these effects.
I teach self defense courses and have been spray with a variety of chemical agents, punch II-freeze+P, def-tec, bodyguard LE-10, fox labs and sabre red. Sabre red level III is hands down the nastiest crap I've even been hit with (it's hotter than the fire of hell)! No kidding after 10+ hours my face, nose and eyes were still stinging.
While I don't think foam is the best option it's certainly better than nothing at all, if you haven't fire it before you really should purchase another can or two and test fire it so you'll have a feel for it.
This is what I carry, sabre red level III 1.33% major Capsaicinoids
SHU rating or a sprays percentage % alone isn't what determines the spays true heat the major Capsaicinoids are.
BTW stay away from cone/fog spray patterns, just the slightest bit of wind and you'll be hosing yourself instead of the bad guy!