I know I'll sound biased but I don't think Montreal and NYI's defensive style makes for entertaining hockey. Vegas-Tampa would be the most exciting purely from a hockey perspective. Montreal-NYI would be boring as hell for most.
I appreciate the defensive side of the game a lot though so I'd enjoy it. Still hoping for Vegas-Tampa. I don't like how over the cap Tampa gets to be, and while Tampa isn't a defensive slouch of a team, Vegas matches up a lot worse against New York's defensive style.