Chicago

294 for sure. I am assuming you are coming from the east. 94 would take you through downtown with lots of traffic and construction. There is some construction on 294 but traffic seems to move through it fairly well. Way better than the traffic moves on 94. Get an IPass if you can. It also works as an EZPass. Tolls in Illinois are 1/2 as much if you have the IPass as opposed to paying cash. I'm not sure if an EZPass is given the same discount even though it will work in Illinois. If this is a one shot deal, then just pay the money and forget about the electronic toll device.