Wordpress in my opinion has more to offer. From its outrageous amount of plugins, to the way you can customise its look - it has it all. I am not saying other blog platforms dont have these, its just that Wordpress - if you are willing to put a little time and effort into, has everything you need, and does it all with that little bit of class.
i googling with keyword worpress, and I saw wordepress.org and wordpress.com (get a free blog here). Any differencess between them. I never use both of them, I use blogger at the moment.
Wordpress.com is free and for wordpress.org- you run it on your own server- so you need a domain and hosting.