I would surely choose wordpress, blogger oh seems so 2005. Wordpress has tons of plugin to make the site better.
Wordpress is better than blogger... Wordpress.com has many more options that are favorable like categories, pages, and trackbacks. This makes your blog better for visitors and encourages better conversation. My wordpress blog is http://punemoms.worpress.com/
If you are newbie in blogging and blogosphere, so that I suggest you to try blogger. Because blogger have flexibility in html editing. If you've already accustomed with it, than wordpress.com is something you may wanna try next. And then try wordpress self-hosted to get site that looks more professional. Believe me, wordpress self-hosted worth to try on...
I have had blogger blogs that were making me money deleted for no reason. Self hosted wordpress is the only way to build a money making blog empire. If it's just for the link juice then blogger is ok.
if you have used both wp and blogger, then you could have answered by yourself if not, wp is the best best best best