I don’t know much about Ignite, but I’m going to find out more. As Garr Reynolds explains at Presentation Zen:
I love the Ignite format — 20 slides, advanced automatically after 15 seconds (total: 5 minutes). I actually like this format a little better than Pecha Kucha. Ignite short-form presentations are a little bit faster and a little bit shorter than the Pecha Kucha style (which is also good), and this often leads to tighter talks. The point of an Ignite talk is not to rush through the topic or to dumb it down, but rather to work within the constraints to illuminate and illustrate the essence of your idea and of your story.
Watch the sample videos and you’ll be intrigued, if not amazed, by how well the visual aids are used.