Great Choice. IMO this is the pump action that all others should be judged against. I wouldn't part with my wingmaster for anything. I have 3 barrels for it (Fixed Full Choke, Rem Choke 2 bead and a Rifled Slug Barrel). Great choice for a first gun as it will do everything for you besides make breakfast but it will get you the main ingredients. HAHA.
Overall get a wingmaster or if you want to spend a little less get a 3.5" super magnum express. Not quite the same finish and a little harder of an action to work (not as smooth) but after its broken in its a great piece as well.
Never had a mossberg but anyone I know with them has not complained.
Ithaca makes a good shotgun if you can get your hands on an old deerslayer
If you can find one winchester model 97 is right up there in my mind with the wingmaster. Open hammer and made like a swiss watch which is also its downfall as it is very complicated.
There are so many other models out there and some higher end companies are making competitively priced shotguns to keep up with the rems and mossbergs. But another thing to consider is the 870 platform be it wingmaster or express are simple, rugged, modular (so many interchangalbe parts). Even if you want you could buy an express and if its your thing you could even go the tacticool route by putting rails, pistol grips, folding stocks, tube extensions, red dot/scopes, the list goes on.
The nice thing about the wingmaster is its a gun you will be proud to pass down to a young lad who can hopefully pass it down when he is older. ..
Used 870 Wingmaster. Mine cost about $300 with a 28" remchoke barrel, 21" rifle sighted barrel, and the stock 30" full choke barrel. That was about 8 years ago.
I picked one up for my wife 2 years ago. It cost us $350 and came with a skeet barrel (great for grouse!). I then picked up a 28" remchoke barrel on the EE for around $100.