While I think there are better choices, I dont think either one is a bad gun when compared to no gun. Here is a link to a recent article where a .22 was enough.
http://usatoday30.usatoday.com/news/...ert/57580692/1
The best part? Because the gun was used in a murder, it had to be confiscated. Many local residents offered there guns for protection and the local pawn shop told him he could borrow any gun he felt comfortable with!