I'm getting pretty serious about buying a handgun for home/family security and protection. I'm not sure which caliber and even make would be the best fit. I'm looking for something thats not to costly, that my wife will be able to handle (she has shot a 9mm, andrifles), anda gun that has good knockdown power butwill also notcause my wife to be afraid of it. I'm looking to buy before Jan. 20th (for obvious reasons). Any suggestions/experiences would be helpful.