Do you mean the hotels on Hotel Plaza Blvd? The non-Disney ones? You may get a better response on the Orlando Hotel/Attractions board.
I'll give you my $.02 though.
I stayed at the Courtyard (which is now a Holiday Inn), and had good experiences. The first time I was way back in the wings. It was quite a hike back to the room after a long day in the parks. The second time, I stayed in the tower, and had a GREAT room that overlooked the pool.We caught some Epcot fireworks off in the distance. I would stay there again in a heartbeat. The rooms are huge, and were clean. (At least for me....)
I also stayed at the Royal Plaza. My experience there wasn't as good as the Courtyard experience. We stayed in the garden wings, and not the tower, and I've heard that can make or break your experience. The room was worn and well in need of repair. It was, however, very clean, and we got cool toilettries!
I wouldn't hesitate to stay at any other of the properties. I'd actually like to try the Hilton or the Doubletree.
If you can find a good rate, I would definitely stay in any one of these hotels.