The latest installment of this long-running all-girl-with-hardware line starts off pretty haltingly, but picks up enough steam mid-way through to warrant a marginally above-average rating.

The first two scenes, like the rest of the tape, feature delectable eye candy, most especially gorgeous Gina Lynn in the opener, but garden-variety sex.

The vid's first real sparks occur in the better-energized scene three as Lynn strap-ons shapely newcomer Charisma, who sports a fine pair of giant fake tits. The sight of these two Silicone sisters going at it is a real flagpole raiser.

Scenes four and five also pack some punch care of the little-seen (these days) Lita Chase, who emotes like a champ whether pitching (four) or catching (five). The closing quintet produces a few moments of intensity also. But overall, SOS18 is hardly, as Lynn opines at tape's end, the best volume in the series.