Above all, fit is the most important thing for me in a shotgun. After that, I really like O/Us. I'd like to know what shotguns you like and dislike, and why. Keep in mind that if I don't like a favorite of yours, I'm not trashing it. I am giving an opinion based on fit.
Here are a few:
Browning BPS: Tremendous value for the money. Reliable. Excellent quality. Ambidextrous. Good looking. Weather resistant. Good fit. Kind of heavy in 12 gauge. Superb proportions in 20 gauge.
Rizzini side by sides. Really good quality. Broad price range, from under $2000 to as much as you want to spend. They have one model that sells for about $1700 and is a real bargain at that price. Very beautiful too. Unfortunately I don't like side by sides because they are cumbersome for me to carry and have awkward ergonomics. I guess they're not for everybody.
Browning Citori. Doesn't fit me. Seems blocky and oversized. Shot one for trap and didn't like it because of bad fit.
Browning BT99. Nice gun for the money, but needs adjustable stock. I tried two and the older model fit well and I could shoot well with it. The other one was new and it made my face hurt after only one round of trap.
Beretta 686, 687 O/Us. The best field guns in the world. Fits me perfectly. The 12 gauge is proportioned so well that it carrys like a 20 gauge. The 20 gauge carries like a 28 gauge. God bless Beretta! They are superbly beautiful guns too, and so well made it brings tears of joy to my eyes. Unfortunately, the Euro is strong vis a vis the dollar now and they cost about $2000 to $2500 now.
Browning Cynergy. I found it appealing when shopping for a 12 gauge. I really tried to like it, but it just doesn't fit me. When I shoulder it, it is an amazing experience. My eyes naturally align down the right side of the barrels. I'd like to meet the person this gun is built for just to see how he's proportioned.
Winchester Select Extra Trap. Really a good value in a trap gun. Durability matters with guns like this and while this is my trap gun, I have not shot enough thousands of shells in it to tell whether it is durable. So far so good. Lots of features for the money. Fits me very well. Can get a slightly used one for about $1000.
Mossberg 500 Bantam youth gun. Sensational value for the money. Ambidextrous. Tapped for Weaver scope mount. Reasonable price. Reliable. Really accurate with 2 3/4 inch Rottweil slugs, but 3 inch Rottweil slugs are too powerful and cause gun to jam. Comes with three choke tubes. Good proportions for a young shooter or a woman of around 5 feet in height or somewhat taller. Tang safety. Overall a really good gun. You don't get refinements like chrome bores, but you do get more than your money worth.