variety of terrain, generally good conditions, great lodges and food
rather crowded, a bit expensive, can get icy
Chestnut is the by far the best place to go in Illinois! It has something for everyone and even has a great view of the Mississippi. The hill literally runs down to the banks of the Mississippi and the railroad tracks. Don't worry about falling in though, there are many orange fences to stop you from doing so. These serve their purpose very well as brother found out one afternoon when he couldn't stop and plowed into them and getting his skis and poles very tangled. The ski patrol had to help him out, but he missed the tracks and the river. :)
The bunny hill is great for learners who aren't ready for a lift and when they are there is a second bunny hill that has a slow double lift. There is a lot of beginner and intermediate terrain and even some runs of moderate length. The advanced runs are rather difficult and I have been there when there are moguls and the terrain park is great. The lodge is great and the food is good, although not cheap. The rental facilities are good and the staff knows what they are doing and is very helpful. For the most part the rentals are good equipment for being rentals. The conditions are generally good as they have snowmaking, but later in the day it can get icy, especially if it has been warm or sunny that day.