A lot will depend on your location and willingness to travel, as they are all pretty spread out.
Renny is easily the cream of the crop. The "Gold" and "Orig" layouts used to diverge a little, but now they follow the same routing. There are some holes with two tees, some with two pins, and some with both two tees and two pins. In short, the longest-to-longest is the Gold, and the shortest-to-shortest is the Orig. You might as well play the Gold -- you can see all the Orig shots along the way. Most importantly on Renny: Get a map. It flows fairly well, but a map is almost a must for first-timers.
Everybody loves Hornet's Nest -- except me. Again, there are sorta two layouts here. I think they diverge a little bit, but mostly follow the same routing. The longer route is called the Web, as Captain pointed out.
Those are the old-school "Big 2", although in my opinion Renny is WAY better.
The other 2 old-school courses are Reedy Creek and Kilborne. Both are fine. Wooded, with fairways that are wide enough to not be all that taxing. Nothing special about these courses, but nothing wrong with them. I prefer Reedy over Kilborne. Oh, they have added a bunch of pins and longer pads to Kilborne to make a longer layout there. I have no experience on that. I like Reedy better of these 2, but there's really no reason to play these unless you are right by them. (There is also an older flat par-54 course in the hood called Sugaw. In my opinion, it is not worth your time to play there.)