Hello, from what I've heard, Co-op's aren't as important in a post graduate program as they are in an undergraduate program because 9/10 graduate candidates would already have some sort of work experience. I don't know much about Schulich's MBA program (I'm an MF candidate), but I have heard very good things about their MBA program. They have a good ROI, better than most Canadian schools apparently. I think the only downside to this program in Schulich is that the first year will be in India. It is one less year to build up your network in Canada (since that is where you would like to secure a full time job).
It all depends on what your priorities are. Degroote's co-op option gives you an insight into the type of career you are looking for and you can then decide if you really do like it or if you want to venture towards another field. If we're strictly talking about the name of the school then I would pick Schulich.
Location wise both schools are in Ontario, I'm sure recruiters from Toronto would be present in both. Tuition costs may also be a factor for you, Schulich's tuition can be fairly pricey, not sure about the tuition costs of Degroote.
I hope this helps, good luck!