Southeastern is a really great show. Pro Am, also in Georgia, is a good one. There are a few in North Carolina that I absolutely LOVED going to (Blue Ridge, Carolina Classic, and Asheville). Those three are my favorite.
If you want somewhere you can drive to in a day, there are two awesome shows down here in Tampa. One is called Harvest Days and is around this time of year, and the other is either Gasparilla or Tampa Charity (they alternate each year) and that one is in the spring.
Hope that helps : ]