The Believe in Holiday Magic Fireworks are a limited run, but Disney is also adding a a holiday part to World of Color. Personally if you haven't seen WoC I say go with that, if you have go with the fireworks.
Definitely the fireworks. As posted above, the world of color is always there-year round, where are the holiday fireworks is limited time only. I would do the fireworks.
If you can get back to the parks within a year the fireworks. If it's unlikely you will get back, World of Color. WoC is a great show. The Christmas Fireworks are not the best firework Disneyland has, just special for the season.
Dreams Unlimited Travel is committed to providing you with the very best vacation planning experience possible. Our Vacation Planners are experts and will share their honest advice to help you have a magical vacation.