I already have a 835 Ultra Mag which is great for ducks, but Im am thinking about buying a gun that is a little lighter just for hunting dove. Im on a budget due to college and Im leaning toward a new 870 Express. I found a couple used Wingmasters in my price range, but none with removable chokes. What is your opinion on the new Express? Does it really rust that bad, and is the plastic triger guard really that big of a deal?