Neither. 18-20" barreled 12-gauge pump with 2 3/4" low recoil 00 buckshot. OR, a Remington 870 express with 18" barrel in 20-gauge loaded up with #2 buckshot. Held one the other day and they're nice little pumps...20-gauge will pack a punch at 15 feet.
But if I had to pick, whichever you could mount a tac-lite on, and make into a dedicated night stand gun.