I had a great time in Champaign 2 years ago. The tix were not too difficult to come by, the fans were great (they hate TSUN almost as much as we do) - though I'm sure that with their recent victory they will not be as contrite. There were some good college bars to visit that evening, and the ladies were better than I expected (certainly better that NU or UM).
MSU is also a great campus to visit. I dare say that the attitude of the students parallels that of tOSU IMO. The ladies are simliar to those at home, and the campus atmosphere is great. You'll have some good discussion topics with Dantonio at the helm and the mutual distaste for UM.
I would avoid Wiscy if I were you. I don't know your location, but it's a long drive for the treatment you'll receive - bonehead. Think PSU, but stuck in the 80's and not as classy, if you can believe that ("Jump Around" is still fresh up there).