In a home defense shotgun I prefer simplicity and ergonomic controls. You don't want to be fumbling with awkward controls in an emergency situation. I don't know what you mean by not being able to pump well. Do you have an injury? Pump shotguns are far simpler that autos with fewer parts to malfunction, easier to disassemble and maintain, and probably more reliable (although modern autos are plenty reliable). I handled a couple dozen pumps at the gun show and opted for the new Winchester SXP Defender. It turned out to be a great choice. The safety is on the front of the trigger guard, right where the trigger finger is in the ready position. If you are a lefty, the Mossberg tang safety is ambidextrous. The SXP action release is behind the trigger guard where it can be activated with the middle finger of the shooting hand. I don't have to shift my grip at all to use either control, making the SXP very instinctive and natural to use. I do not like the location of the Remington 870 release at all. The SXP has a "speed pump" rotating-bolt action. If you use the support hand to pull the shotgun into your shoulder, the intertia-activated bolt will perform the ejection stroke for you. A quick forward flick of the forearm and the chamber is reloaded for a quick follow up shot. This Winchester action is the fastest shooting pump shot gun, capable of 3 shots in 0.56ths of a second. The rotating bolt locks up with the barrel (very strong) like an AR-15 on steroids. The Remington 870 and Mossberg 500/590 lock up with the receiver (not as strong).
Be aware that a pistol grip stock can interfere with reach to the controls, a common complaint with the Mossberg. I prefer a standard stock for slimness and more of a sporting profile. It might help if I ever had to explain myself in front of a jury.
I did see a nice semi auto that I liked, the FNH SLP (has shared lineage with Winchester autos), but it cost more than three times the cost of the SXP.
or a saiga 12 (get them before they are banned for being non-sporting...)
