wordpress is excellent for blogging you can even find some free host which will allow you to install wordpress.
I prefer blogger its much easier to use. but WP is far more effective in lots of ways such as SEO and has a million add-ons available. if you use blogger you should have your own address not a blogger address
At our blog, my partner just wrote a post about this today. Maybe he got the idea from this thread? Here is the link to it guys, I think this will give you some more detailed opinions and insight on this issue: http://www.blogussion.com/blog/creating-a-community/the-final-blogger-verse-wordpress
wordpress had many option to customize but not blogger. i still select wordpress for professional look