Which Ice Age Movie is better?

I was thinking about including all five Ice Age for this poll. But it felt pointless to me as I know the first movie will just dominate and win by a landslide (no wonder though, because it's easily the best one) so how about we just pit Ice Age: The Meltdown and Ice Age: Dawn of the Dinosaurs together? These two movies are actually compared to each other quite often for being the only worthwhile Ice Age sequels, as well as being the 2nd and 3rd instalments in the franchise, respectively. Which do you prefer?