Lots of good suggestion so far. Since this is for the dual role of carry and home defence, suggest a medium-size 9mm.
The full-size guns are ideal for home defense, although one might discourage you from carrying if you're not all that motivated to do so.
The small-ish and pocket guns are very convenient to carry, but sacrifice significant capability that you might want in defending your home.
The medium-size guns are a compromise.
In all seriousness, the optimum solution is to have a gun ideally suited to each role. If you stick with full-size and compact offerings by a particular mfg. you'll often retain some magazine compatability as well (ex. the mags from the larger model may fit the smaller model, this works throughout the Glock line for example, with the exception of the G36).
The full-size guns are ideal for home defense, although one might discourage you from carrying if you're not all that motivated to do so.
The small-ish and pocket guns are very convenient to carry, but sacrifice significant capability that you might want in defending your home.
The medium-size guns are a compromise.
In all seriousness, the optimum solution is to have a gun ideally suited to each role. If you stick with full-size and compact offerings by a particular mfg. you'll often retain some magazine compatability as well (ex. the mags from the larger model may fit the smaller model, this works throughout the Glock line for example, with the exception of the G36).