I would recommend a Mossberg, or a Remington. You can not beat them cost & reailablity. I prefer a 12 gauge myself. It is good for all types of shooting. I enjoy hunting small game with one & small shot. I sometimes use a 410 too, for the same reasons.
The most important thing about a shotgun is fit. The gun must fit
you. If the gun fits, it doesn't hurt to shoot it, and you are a pigeon breaking machine.
I prefer an over/under, I shoot an Italian gun, my gunsmith, now departed, worked over the stock, It has little resale value, but it is the last gun I would sell.
Having said that, it makes more sense to spend a couple hundred bucks having the stock fit on a $1,500 stack tube rather than spending the same $200 fitting the stock on a $300 pump gun.