Kellogg gives lots of scholarships out when they provide financial aid. Extremely unlikely to get a full ride, but 15-20k is possible. There is a lot to be said about graduating debt free and is something to seriously consider. However, you can only do this once so it isn't necessarily the only factor.
I have friends that went to second tier schools (relative to the M7) and most are doing well, but some are struggling. Understand that going to a top school is not a golden ticket entitling you to everything you dream but when the economy tanked you were much better off recruiting out of a bigger name school. Who knows what the job market has in store for us the next three years. Not to say Anderson is not a great school, but it is something to evaluate in terms of your personal career path. Look on linkedin for alums of both schools to see if there are any at your target companies, and what positions they are in. Not to say you can't be the first, but a lot of jobs come from recruiting (look at recent employment reports) and/or from networking.
Not paying $1,500-$2,000 a month worth of student loans is very appealing. In reality a full ride tuition wise would still equate to 50k or so of living and misc. expenses so unless you got the cash you still will be paying $500-$750 but that still pales compared to what a full load of debt will be. That said, the debt may be worth it to you if you have a much better chance at your dream job. I am more than happy to pay my loans each month and feel the investment was worth it...but yes I would love not to have that hit on my account every month.