I was at the same place as you in R1. I got into Ross and I got into Foster with a full ride. As an international student, I am a bit risk averse and my visa situation will be at the mercy of big companies in tech and consulting. So, Ross made a lot better case than did Foster. That said, if you want to get into tech and geography favours Foster, I would go with it and save the money.
Quick questions for you. What is your current industry? Are you looking for a vertical jump or change industries altogether? If it is the latter, Ross might make a better choice just because of how strong the general MBA program is there. For the debt, 100K matters a LOT, but probably gets offset in the long run (in 5-6 years), if Ross makes a 20K difference per year. Hard to quantify that difference but probably true for Ross, unless you want to get into the niche tech startups, which I am guessing you don't want to do? If you want to work in Amazon/Walmart, Foster would be just as good as Ross!