870 or 1300??

I am going to purchase a shotgun, primarily for sport shooting such as skeet, etc.I am a novice to the sport, but am familiar enough with shooting to know that I want to do it, and have always wanted to do so.I would like to purchase a shotgun that could be used primarily for this purpose, but on occasion could be taken to the field.I need to make a decision that I won't regret. For example, if I purchase a Remington 870 express, will I be left wanting a Wingmaster, due to functional inadequacies of the express? Likewise, would I regret buying the 870, wishing that I had gone ahead and picked up a Remington 1100 or something of that nature?Also, are the Winchester 1300 series, adequate for sport shooting?I'm talking specifically about the 1300: Walnut Field, Ranger, Sport and Field, and Upland. It appears that in the price range of the Winchester 1300's, you find Remington 870 express models to be the main competition in terms of price. I'm also aware of the Mossberg 500's at a slightly cheaper price.So what would be your recommendation.Hold out for a more expensive gun, or go ahead and buy a $300-$400 gun.I don't want o make a purchase that a few months down the road I'm gonaa say "Damn I wish I had......."