you didnt mention a price range. all shotguns use the same cartridges, so they all kill baddies the same. No shotgun is more deadly than another. So to answer your question, all shotguns are the best for home defense.
now if you want it have other stuff then thats just personal preference, and the world is your oyster. Decide what you want: pump or auto, then move on to the next feature you like.
Personally I went with a Mossberg 590 and a Saiga 12.
G23; .40 S&W Club #10
VEPR K 7.62x39; Kalashnikov Club # 770
Mossey 590; Tactical Shotgun Club #770