For home defense, most Americans in general, and LEO/Mil in particular prefer handguns. Rifles are not generally as well suited to interior defense. They serve a better role defending the home from intruders at a distance from the house, and penetration of outbuildings, vehicles, and other cover would be preferred. That's exactly why the issue milspec ammo for the M16/M4 uses a steel core.
Handguns do a better job when the intruder is within the room or adjacent room, shotgun for interior defense, rifle for exterior defense. In a rural or suburban scenario, it's much more likely if mayhem is spreading in the neighborhood.
You can wear a handgun in a holster around the house and property, even doing things like operating a chain saw, where a long gun is inconvenient.
Which rifle is best is an endless game of situations and favorites. The best to get is one you bought to go shooting with, especially if it's a live game rifle, like for deer. You'll use it more, shoot it more, and be more familiar with it, which makes you better with it. There's less guessing about range, it's familiar. Being good with it is much more important that what it is - an unfamiliar gun little used probably won't cooperate as well and get hits.
20 million prior servicemen could suggest the AR15, we've carried one and shot it for weeks and even months. The rural shooter might like the Win 94 for exactly the same reasons. The defender has a three to one advantage as battle historians have researched extensively, but I don't know of any one rifle available in hunting use that has it over other guns three to one.
Most personal confrontations end in less than four shots, usually from handguns. Rifle confrontations might last up to 35 - at which point a hit or common sense intrudes, and the risk is too much. At that point, you'd have to ask if sheltering the Cartel hitmans girlfriend was really that good a decision. Point being, most home invasions by armed individuals are continued conflicts brought to the home. Defend against that, and the risk is substantially reduced.