Another vote for a medium frame Smith and Wesson with a three or four inch barrel, chambered in .357 (which gives the .38 special option) or simply in .38.
I would go with a fixed sight model, since you are new to all this.
As others have suggested, used guns in like new condition are to be had and, to most of us here, are more desirable than current production. That said, you can certainly find a new production gun that meets the above requirements.
Small frame guns are meant for concealed carry. They are hard to shoot well. They can be very effective in the hands of an experienced shooter. They are NOT good guns to learn on.
The medium frame .38/.357 with three or four inch barrel, in blue or stainless steel, is an IDEAL all around handgun and is partcularly well suited for HD.
Just remember...when revolvers ruled the law enforcement roost, not so long ago, the FBI issued 3 inch Model 13s, the NYPD issued 4 inch Model 10s and the LAPD issued 4 inch Model 15s.
Note the FBI preference for the medium frame gun, despite the fact that Agents primarily carry their handguns concealed.
Once you make your pick and have spent some time with it, and are happy with it, consider buying a second one as a spare.
Good luck! I hope you enjoy your new gun, whatever you choose, and never need it to defend your life.