I just put down a deposit on a rental home. Our dates are 10/30/03-11/7/03. We have 3 families going, totaling 6 adults and 2 children. I spent days researching this. I found the best deals to be through orlandovillas.com. I got a 5 bedroom 3 full bath home for $913.00 for 8 nights. That is the total after tax and pool heating. It has all the amenities: private screened pool, washer & Dryer, crib, highchair, dishwasher, multiple TVS (one big screen), DVD player, surround sound stereo, ect.
Granted I haven't been there yet. The home is 2 years old, and the pictures look great. The owners on that website are all from the UK. The one we rented has a management company in Kissimmee, which checked out great with the Orlando Better Business Bureau.
I just found them to be several hundred cheaper than other places. I guess I'll see if there is a reason why, but they did come highly recommended. I heard they are cheaper because they really want to fill the home, they also had the most unavailabilites, so a lot of people must be using them.