Yes How do. I cannot go the rest of the year because of a few health reasons/ family illnesses etc, and if I could muster up the ability to go, I would think OTC is the most heartwarming (ironic seeing that it is by far the coldest festival!). It really places you in the spirit for a true Holy-day season. The train ride is a must, it is a sing along that culminates with a touching story at the holdup stop (historically at least).
Oh, and you buy a lot of good stuff while you are there for gifts!