train is alright, via rail is enjoyable but can feel a bit cramped with the way the seats are setup (depending on the crowd)
atm its 39 bucks each way to MTL, however it is a pretty lengthy trip as this sale is on a multi-stop route, (kingston, ottawa)
bus price (for students) isn't much different
edit: megabus usually hassome ridiculous sale worth looking out for something like 10 bucks one way