TyRy, there was such a thread because I remember posting on it. There were people in favor of both routes but my opinion was that unless you're going to go through Atlanta during rush hour then the Alabama route was slower. I've driven both routes and the problem with the Alabama route is once you get to Montgomery then US231 is frustrating because the speed limit is lower, the road passes through lots of towns each with their own set of local police hoping to snare damn Yankees and in between towns you have Alabama State troopers to contend with. And then there's Dothan, which is Stop Light City on it's "traffic circle". The Georgia routing gets you I-24 between Nashville and Chatanooga which is quite scenic.
One other tip since you're coming from the Chicago area. The tendency for most Chicagoans is to take I-65 south through Indy to Louisville to Nashville. But truck traffic is heavy, Indy and Louisville are big cities with their own traffic messes and you are actually backtracking west between Louisville and Nashville. Check the map and instead take I-57 south through Illinois to I-24 to Nashville. Traffic on I-57 and I-24 is much lighter and there are no big cities. Southbound via I-57 you do feel like you're not making much progress because 5 hours after you leave home you're still in Illinois! But once you hit I-24 and another 1.5 hours and you suddenly find yourself in mid-Tennessee. This routing is even better northbound because you enter Illinois early in your drive home so you feel like you're "home" even though you still have a long way to go. Just my opinion.
BobK/Orlando