Hi Joe,
I think asking a group of dedicated hunters their opinions of guns is a loaded (forgive the pun) question. I bet we all heve pretty strong opinions on the matter, guns and dogs can lead to lively debate.
My two cents; first off, get a copy each of "Good Guns Again" by Stephen Bodio, and "Spanish Best" by Terry Weiland. Both books are fun to read, very educational on quility guns for using, not collecting. My taste have been influenced by both writers.
My standard duck gun is a 1993 Ruger Red Label Sporting Clays model. It shoots 3" steel, has 30" barrels with screw in chokes, nice wood and has never given me any trouble even thogh my gunsmith hates the investment cast parts inside the gun. I also have an old Parker GH, hammerless 10 ga. with 32" damasces barrels on a size 2 frame. It has beautiful wood, but the barrels are too pitted to shoot. I'm thinking about sleeving them down to 12 ga. to shoot once a year in memory of my Father in Law who gave me the gun.
I also have a Lefever DS grade 12 ga. in beautiful condition that I use for pheasant and occasionally take in the duck blind with bismuth shot. I would put it right up there with the Foxes, LC Smiths and Parkers. All of these old guns are classics, condition is important, length of chambers and shape of the stock. You can find an old gun built around 1910 with very modern stock dimensions or way too much drop at the heel.
I shoot my Lefever well hunting, it has a high comb, but it is horrible at sporting clays for me. Now I have only shot SC twice in a decade, but just last weekend I went with a friend. I used my Ruger for the first half of the course and shot 31 out of 50. Then I switched to the Lefever and shot 10 out of 50. Now to be fair the Lefever is choked mod and extra full, that plus the two triggers and the side by side look really effected my shooting. But like I said, it works very well in hunting situations.
Good luck in your quest, you can never have too many guns.
John