Go for the Sienna or Vibe. Sienna because it's a minivan and that's good for families with small children (though they become useless once your kids grow up as many of our relatives have found out, they now all have CUV's or SUV's).
And Vibe for the fact that Pontiac is already out of production and any models you find will most likely carry lots of rebates from dealers trying to move the last of the inventory. Also, the Vibe actually has a better reliability rating than the Matrix, despite the fact that it's basically the same car, go figure.lol