If you're buying a weapon for home defense, then (IMHO), your best bet would be an eight shot .357 revolver, loaded with .38 special hydra-shok ammunnition. My reasons are thus...shotguns are long, even short ones, if it one is down to inches, the perp. can possibly get his hands on the gun and try to take control from you. In a stressful situation, you can forget to pump the next round into the chamber, it happens! There is little to no expansion of the shot in the first ten feet, I know we all prepare to shoot something at 25 yds., but you are most likely to shoot a intruder at less than ten feet, just think about how your home is built, with all the corners and walls, a clear shot in which the shot pattern has any expansion is quite unlikely. Next, I've never met your wife, but my wife would have a hard time becoming proficient with a hard kicking shotgun, she is however already quite proficient with a revolver. An eight shot revolver gives you several advantages over the shotgun. One, its easy to shoot with .38 special rounds, even for small women. Second, no safety to accidentally forget about, it's point and click! Third, it's short, it would be very hard to take away from someone, without getting a shot off first. Lastly, the ability to shoot low powered .38 special rounds all the way up to hot .357 rounds gives you the ability the load the weapon to you and your wives comfort level, the best thing to think about a home defense weapon is...what if I'm not home and my wife has to use it, is she able and proficient with this weapon enough to use it with confidence. Just my .2 cents.