Originally posted by SnackyStacky
It depends on your needs.
First, I think you mean an annual pass. Seasonal passes I believe are only available to Florida residents, and it looks like you're from Maryland?
If you do mean an Annual Pass, the break even point is 8 days. An Annual Pass will give you unlimited admission to the Magic Kingdom, Epcot, MGM, and Animal Kingdom. A Premium Annual Pass will get you into anything and everything Disney has to offer, and I think the break even point for one of those is 13 days.
If you will be visiting parks on 7 days or fewer, your best bet is a hopper pass.