I hate driving into O'Hare. It takes about 2 hours to go 2 miles. The EL is much better in that regard. O'Hare itself isn't bad, but it can definitely induce a considerable amount of stress in someone.

That said, on one trip I ended up finding a room at the Hilton at O'Hare for only $65 for a night for a 6 o'clock monday morning flight. It was the most convenient airport stay that I've had.