1. The idea that you'll be evaluating and ejecting rounds to select your preferred shell for the situation during the stress of a home defense situation is kinda ridiculous.
2. No matter what you've heard at a gun shop, anything that will reliably penetrate a human body deep enough to effectively stop an attack will also penetrate 1/2" drywall. Fill the tybe with 00 Buckshot, know how that particular load patterns in your gun, and always BE SURE OF YOUR TARGET AND WHAT IS BEHIND IT.
I'm sorry. It must have been my 23+ years of training and experience as a LEO that kicked in. How stupid of me.