I like Benelli ....and I have Benelli SuperSport models in 12ga and 20ga...and new, they're at the top end of your budget now ...but its a very good gun. Its light, but with comfort tech system in it, its a soft shooting gun. Because they're light...I went with a 30" barrel on the 12ga...to give me a longer sight plane ...it helps me on the follow thru. The longest the 20ga comes in is
28" ...and while its not optimum for me, its ok.
For a gas gun ....there are a lot of Beretta models...or the Browning Silver series ...like the silver hunter which is a pretty nice gun.
It depends on what you need for "Fit" .../ personally I prefer a parallel comb...so the Super Sport with its highest comb pad works for me pretty well...there are a couple of Berettas with parallel combs as well.
I hate picking my hulls up off the ground, especially on a sporting course...so all of my primary guns are Browning O/U's....but Benelli Super Sport is the gun I use as a Travel gun, when I only want to take one gun to do a lot of things away from home - Skeet, Trap, sporting clays, some upland birds...or when I travel on airlines ( I don't want to give an airline a $ 3,000 plus gun - just in case ! ). Its also a good foul weather gun .../ my 12ga version is about 10 yrs old now - bought it when they first came out ...and for what its worth, I'd buy it again.