Shotgun shopping is a real bummer in my opinion. It's so important that the gun fit properly and point well for you.
I had read articles in magazines and online, and I had a few shotguns in mind that I thought offered good value in a reasonable price range. I went to about 6 different gun stores in as many months, and I found out none of them fit me well. What did fit well and point instinctively for me? Beretta Silver Pigeon and Benelli Black Eagle. Way out of my price range at the time. I settled on a Turkish over/under that fit me best of all the sub $500 shotguns I tried. I like it, but I don't love it. However, I did start shooting more trap and hunting more small game after I bought it, because it made shotgun shooting more enjoyable than missing all the time with my 870 Express youth model.
I promised myself I wouldn't buy another shotgun until I had about $2000 set aside and enough free time to be able to shoot trap and hunt small game. That hasn't happened yet, so I don't have a new shotgun yet. But when that day comes, I will go around and try a bunch of different shotguns and just buy the one that fits me best. I think that is the key to being happy with a shotgun purchase and actually using the gun once I get it home. It's hard to get excited about shooting trap or hunting rabbits when your gun doesn't mount as well as it could.
If you are going to buy a semi-auto, have a look at the Benelli Super Black Eagle and the Franchi Affinity. They're not cheap, but I recall them mounting and pointing well for me.