Anyone out there that have experience with them? Are they a viable home defense round? I know there are several types: bean bag, rubber pellet, rubber slug, etc., but is one any more effective then another? I live in a condo and worry about over-penetration with buck rounds... my gut instinct says stay with 00 buck. What is better between 9 pellets and 12 pellets? Are there any home defense application specific shells being made? Thanks to anyone who can help!