All festivals should be evaluated by one metric: "How fun are they for children?" By that metric: Jewish weddings are probably best, followed by Christian Christmas and then all the rest of the holidays line up, some being particularly annoying for children. Those festivals where children have to fast and do work are the worst.
Not sure about Muslim holidays, but growing up in a predominantly Christian country as a Jew, we got much more holidays.
My non-Jewish friends were definitely envious.
Pagan holidays. By which I mean, ancestrally European holidays. But being ancestrally European, I'm probably biased. Sukkot and Ramadan don't do much for me, and I don't really care about Jesus. But I love Halloween and Christmas, and to a lesser extent Easter, as long as they are divorced from superstition. Why do I love these holidays? Because we celebrated them growing up in mostly secular ways.
Granted, there are things I dislike about them. Too capitalist for starters; I don't really see the need to celebrate the holidays by purchasing trinkets, candy and unnecessary gifts. Still, they serve a social function, recognizing the rhythm of the seasons and providing an opportunity for gathering of family and friends.