I do not own, nor have not shot S&W's offering with that caveat, this.
Mag capacity is a function of whose mag's you'll be using. Since both are equipped with an aluminum (S&W with Scandium) frame(s) even call. The modern aluminum alloy's have few of the downsides that the older stuff did. (As in pre-mature wear of feed ramps) Any aluminum 1911', but especially an "Officer" length, shouldn't be shot long term with +P's. (Too much chance of frame battering, especially with the +P 185's) Beyond that, do what your innards tell you to do? It'd be hard to go far wrong with either. They both are high quality products. However I'll express one opinion that I would apply to either gun. Make sure that at the very least, it has a front Tritium night sight.
JOMO?