put aside any childish fantasy that you'll need more than 5 shots in an SD situation. Real Life Defense isnt a Steven Segal movie haha!
And if you've ever talked to anyone unfortunate enough to have been involved in a "real life" self-defense shoot-out, you'll soon learn that there's no such thing as having too many bullets on board. If the ammunition capacity of a handgun being employed for self-defense is a concern laced with fantasy, why is five rounds the magical number for "having enough"? Why not try loading up with just four?