A tie for me between the Mossberg 500/590 series guns and Remington 870 as far a good utility pump guns. Otherwise I'd love to have a Beretta Premium grade shotgun, but don't have the money since they cost more than my house.
Remington 1100. Been together 50 years. Outlasted two wives, seven houses, 5 dogs, 5 boats, and all but one car, and still running like a watch, as do all it's sisters. But I also like my Wingmaster Magnum and my BSS Sporter 20. And about a dozen other SxSs.