What do you think the strengths of both platforms are?
Since Indiegogo is more of an international crowdfunding platform with looser requirements, it's kind of the default if you live outside the areas that Kickstarter accepts projects from (unless you own a business in one of the areas that it does accept projects from).
I don't really like the flexible funding option for Indiegogo, unless it's a super cool product and I am confident that if the team doesn't hit the goal, they can still make good on the rewards they promise, as they will keep the funds. It also obviously works well for more charity type projects.
I do think Indiegogo is more proactive about getting out education materials and is more aggressive with their marketing. Kickstarter does have some cool initiatives too like the film festival. Their creator guide is kind of sparse though. On the other hand, they have great stats, where Indiegogo is much more private with their stats.
I still believe that Kickstarter has more of a backer community centered around the platform. At the same time, there isn't much data that Indiegogo has released regarding backers to verify that belief.