Deer hunting sure is getting complicated. Lotteries, preference points, 300 to 400 hundred dollar tags and geez, fully outfitted and guided hunts for whitetails in the farm fields of the midwest at prices one can hunt Alaska.
Paul, most all the relative small public ground in IL available for hunting receives a lot of pressure and you'll be competing more with other hunters than deer. However, there are some nice public places along the Illinois River that hold nice deer and get very little hunting pressure. If you can deal with bugs, itch weed, flooded ground, duck hunters, etc., and willing to work, that might be a good bet for you if you can get your hands on one of the coveted IL tags.
As for me? Screw it. I'll be going to the big woods of northern WI. Heck, if it was legal to do so I'd sell you my tag for $25.