Only been to one game in person and it was this past October, so I can't really compare to past seasons.
Having said that, I was blown away by the enthusiasm of the crowd in Winnipeg. I've been to games in Ottawa (a lot) and I can tell you that CTC is like a church compared to MTS Center. People stand up for goals, fights, stay standing through the whole shootout, etc, etc. It's a terrific atmosphere IMO.
I've seen games in Toronto, Buffalo, Ottawa and Montreal. I'd say MTS is still louder than the first 3 of those - only one I can think of that tops it consistently is Montreal.