Weatherby SA-459 - Too inexpensive to be any good? $699 msrp, 12g, semi-auto, 18.5" barrel - seems almost identical to USSG SAR HD and Escort MP SA.
My baseline for comparison is our
Mossberg Chainsaw (pump action) with ATI side-folding stock and aftermarket picatinny rail on the receiver (not shown).
Likes: pistol grip, foldable, chainsaw foregrip for low-carry shooting, breaching muzzle (hole saw for BGs).
Dislikes: remembering to rack the slide between shots (a "first world" problem!).
Be sure to post if you know of a
better home defense semi-auto 12g with pistol grip for a
lower cost than the Weatherby!