The gold standard in gas guns in the past 15 years is the Beretta, beginning with 303, then 390 and now 391. Agree w/ Battue, Remington has been left in Beretta's wake.

Remington was in lead, arguably, 30 years ago with the 1100. The gun balances well, is generally reliable (keep some "O" rings in your wallet). It's just been outpaced.

Some might argue that the Winchester Super X Model 1 is the finest gas gun of all time. I think I like it better than these others, but anyone who shoots one much has already had the overhaul kit installed. Then they run forever, or so I'm told.

To recoil operated guns, in practical terms, the Benelli has no peer. Apparent recoil slightly more than a gas gun, but ultra reliable.

That said, I'm a sop for tradition, and I'll take my old Browning Auto Five over all of them.