You're going to find varying opinions depending on who you ask. Your best bet is probably to contact a few outfitters, ask them some good questions, and make your own decision. You can find an article on helping you pick the right outfitter here:

http://www.huntingnet.com/articles/a...rticles_id=451

And you can find a listing of Illinois Outfitters here:

http://www.huntingoutfitters.com/sel...spx?Stateid=20

Gary Harpole from Heartland Lodge and Darrin Bradley from IMB Monster Bucks are both great guys so if you happen to call them tell them Justin sent you.

If you're looking for a do-it-yourself type hunt definitely contact Craig Neace at Bowhunting Whitetails. He's got some great land and I know a few spots still open for this fall.