Ages is your favorite?
I do agree that the core mechanic of Seasons (changing the... hm... seasons) is more original than time travelling.
However, I could not shake the feeling that it is very underused compared to time mechanics of Ages.
Hell yeah. I thought that Ages was better in most ways, especially in the puzzle department... Jabu Jabu's Belly in particular was incredibly tough. Not only that, but ages is arguaby the bigger of the two games since it has two different versions of the same sized world. Time traveling was just awesome. Honestly I think that Subrosia from Seasons is kinda overrated... There's not a whole lot to do outside of the required story elements.
Don't get me wrong, though, I love the hel out of both the games. Two of my all time favorites.