In the recent Times higher world education ranking, mcgill slipped to 31 from 25 (it was front page news here in montreal). It is also chronically underfunded, especially with this year's massive higher education cuts in quebec, mcgill is cutting courses, and opportunities for graduate funding. considering you will only be there for 2 years, this may or may not affect you. With all due respect, your professor's reflex may be to suggest mcgill, but they chose to pursue academia professionally, where such vanity matters a whole lot more. also, they are not going to be the ones saddled with tens of thousands in debt to attend a school that may or may not enhance your life time earnings potential. you came here looking for advice, i gave it but it sounds like you've already made your decision.