Matt:
Dave Harman designed the two courses at Orange County, although Isao Aoki and Phil Ritson also get a credit. Harman's Magnolia Plantation is about as awful as I've seen anywhere, but I've heard great things about Kauri Cliffs.
Both are about 7400 yards. You can get all the info you want on the Orange County National website. I posted their website's comment about it having 18 signature holes last week!
Doug is right about Vickie Hills, the best course named for an adult film star anywhere. I have it #1 in O-town.
Here's your list of our best:
Victoria Hills
Southern Dunes
Mystic Dunes
Watson course at Reunion (if you can count this)
Mission Inn - El Campeon - (most difficult from back tees by far)
Grand Cypress N/S/E
Isleworth
Panther Lake
Osprey Ridge
and possibly the International at Champions Gate (depending on your taste)
The Legends at Orange Lake misses by a shade and embodies that real estate look you don't like.
My overrateds go to Disney's Magnolia, Bay Hill, Lake Nona, the New at Grand Cypress, and LPGA's or Falcon's Fire's courses designed by Rees Jones.
The true strength of Orlando is when you go "off the beaten path" with lesser expecations and lower green fees and play some of our other courses. I'd suggest Highlands Reserve, Eagle Dunes (a dose of Sand Hills near Black Bear), Harbor Hills, North Shore, Deltona Hills, the Diamond Player's Club in Clermont, Errol Estate, Palisades, Rock Springs Ridge, Sugar Mill, the Arthur Hills courses at LPGA or Cypress Head, Swiss Fairways, Green Valley, or Forest Lake.
And Matt, please don't take the sample of Orlando courses as indicative of all of Florida. If you were coming down for the golf I would send you to one of the best affordable public-access swings in North America by catching Lake Jovita, Rolling Oaks and Pine Barrens at World Woods, the Dunes at Seville, and El Diablo. Toss in privates Black Diamond Ranch's Quarry, the CC of Ocala, and Golden Ocala and it is pretty impressive "golf per (lack of) population". There are a few courses in these parts that I have not yet seen and are on my wish list. Off the top of my head, Twisted Oak in Beverly Hills, Rainbow Springs, and a couple others including the UF course.