What is best blog platform? Wordpress or Blogspot?

Tweet

I own three blogs: 2 from Wordpress and 1 from Blogspot. For me, when it comes usability and features I like Wordpress but for some reason I also like using Blogspot especially when you want to put Google Adsense in your blog. Free Wordpress blog don't allow you to put ads while Blogspot allows you to do so. What is your favorite blog platform?