DS Daily: Contra 4 vs. Mario Party

One is all new as of E3, and the other got a great media boost ... and together, they're about as different as DS games can be and still be played by roughly the same groups of people (and also have the potential to be any good at all). So, c'mon, we've been here before. You know what we're going to ask. Which one sounds like the game you'd prefer, if you had to choose? Contra 4 or Mario Party DS?