If you plan to go again, and you can afford to put the money up front, you can go for the 7 day park hopper plus. The more days you purchase, the lower the price per day gets. Since they dont expire, we buy the most days possible and save the extras for another trip. Plus, the price will only go up in future years so you will probably be saving even more depending on when you use the extra days.
Regardless of the number of days, I would recommend the park hopper pass. This gives you flexability to maybe go to one park and then a parade or fireworks at another.