I hadn't thought of the feeding issue and having the shell sort of tumble around. Thanks.
I understand that 00 buck is sexier and more macho, and penetrates much more, but I don't find putting bullet holes in my children all that satisfying. I have a house full of children and a split floor plan, hence, an intruder would most likely be greeted between myself and the childrens' bedrooms. Throwing 00 buck and slugs through the house in a middle of the night gun fight doesn't seem that smart to me. I'm pretty sure that an ounce of lead delivered at 1200 fps would get anyone's attention - at least enough to get the upper hand in the situation. Also, seeing that I am not Rambo, I don't expect to land 100% of my shots.
As far as being shot by a 12 ga at 15' or less, with #8 shot, I don't think many people would walk away after being hit with a few rounds at that distance.