These two teams don't play very far from each other. Just across a river, really. The logos are very simplistic and lack a lot of unnecessary detail. What makes this decision easy is that while the Rangers logo spells out the name of the team, the Devils logo actually uses a subtle "NJ" to reference the home town.
The Devil is pretty evil. He can wreak a lot of havoc on anyone, Rangers included.
I like the red, white and blue in the Rangers logo, but I just really think darker versions of blue and red would look so much better. See the third jersey's crest and its shoulder patch. The Devils have good, strong colors and hell, red seems to be doing rather well in this competition.