For a college campus Korean restaurant, I think Woori Jib is the most genuine and the best in the area. It doesn't say much, but it counts.
I've enjoyed the galbi, cold buckwheat noodles, bibimbap, and many more dishes. They aren't bad. For a college student, it might be slightly pricey, but they've got to satisfy their cravings too, right?
Just don't compare Woori Jib to the Korean restaurants you grew up going to or to the Korean restaurants outside of Champaign, and you'll be content.