Who are the New York Rangers biggest rivals?

Every Ranger fan will have a different opinion on who they hate the most. Most fans today would say the Devils. Older fans would say the Flyers because they remember the Broadstreet bullies. It's actually rare that any would say the Islanders. We laugh at the Islanders more than we hate them. For me personally there's no team, in any sport, that I hate more than the Pittsburg Penguins. And I think if the Penguins keep having success, and with Crosby being there a long time, we'll all eventually agree that they are our biggest rival.Right now if I have to pick one I'll say the Devils.