For home defense, consider a semi auto instead of a pump. YMMV, but in a stressful situation, the less you have to do, think about, the better. There is line of thought that the pumping action itself will be a deterrent, but I differ on that. If someone in already in your private/personal space, doing it 'terminator style' won't make a lick of difference.
Semi's will run you more than 900, but if you shop around you can get a really good one for 13-1400. PSA had a Beretta 1301 for around 1400 over the holidays.
My $0.02