As much as I think Munk looks like a great school, I think your employment opportunities will be just as good with the MAGG - especially when you don't have a large student loan hanging over you, as you try and look for jobs/internships/new exciting opportunities. My tip is to go on linkedin and search students at both programs and see what they're up to.
Personally, attending Munk would require me to take out a lot of loans - which would affect what internship I take ( could you afford to work for another four months unpaid?) After graduation, will those loans from Munk affect where I look for a job, etc?