Another opinion - yes, it is worth it. Those that have spoken negatively about the GF seem to have spoken based on personal tastes, which is why there are so many reports. The GF is not that much more expensive than other deluxes (Poly, Cont, BC, YC, BW).
One of the main things is location, location, location. You're really paying a premium for all Deluxe resorts based on the location (monorail resorts for MK, BC/YC for Epcot and Boardwalk, ALK for AK). So which park is most important to you?
One of the other main things is amenities. Deluxes have more dining options that the other resorts. And for the resort itself, you won't find a better dining option than GF (24 hour Gasparilla, 1900 Park Fare character buffet, GF Cafe, afternoon tea, Citricos, V&A's, Narcooses, and a lounge). There are also a number of activities available at the GF (and other deluxes) - two pools, access to water craft, the GF Spa, tennis, close to golf courses.
So the question you might want to ask is - is a deluxe worth the price. To many, the answer is yes (and not based on the actual room you sleep in). If you think a deluxe is for you, then decide what you want to be close to and what style suits you best.
That's my $.02.