I have used blogger for my own blog (5 years) and my work blog (3 years). Just this summer I switched the work blog to WP - getting other staff on board with blogs, and they're all hosted by our site, not WP.com. Through these challenges and through this switching process, I've found WP to be a little more difficult to figure out (I found blogger to be very user friendly), but can see that there are more possibilities.
I am happily keeping my own blog with blogger, because it does what I need for that blog, and I'm excited to figure out the WP stuff too. Best of both worlds.
My own blog is the one linked above, and here is my work blog...