how old are you?
If i was older, (26+) I would take NW in a second over UT. NW is a much better school, in my opinion, and will give you a lot more opportunities. However, if you want to practice in Canada (immediately after grad), then take UT.
If you're younger, I would probably take UT. Only because NW normally accepts more mature students, and I would feel personally out of place. I'm graduating this year, and for that reason, I didn't apply to NW (until they sent me a fee waiver, and even then I withdrew my app.), because I felt I wouldn't fit in there.