The wedding industry is huge so when planning your big day make sure you shop around. You know you wouldn't try on only one wedding dress, so why only look at only one photographer or one caterer. Look at all your options before deciding which vendors to use.
Shopping around can be especially helpful when you are trying to stay on budget. If you fall in love with a vendor, but they are out of your price range, ask if they can work something out with you. The industry is highly competitive so there is a possibility they will come down a little in price in order to get your business.