I see that this was posted a while back so I hope you've found a solution and are happy with the results.
There are many pros and cons from using a hosted service such as Blogger or WordPress. Keep in mind that WordPress.com and WordPress.org are two completely different things. WordPress.com is hosted (like blogger) and WordPress.org is when you self-host WordPress with your own web host of your choosing.
I wouldn't say either of the two are better in terms of SEO (Search Engine Optimization). However, I would agree with jentyree and say that WordPress (hosted or self-hosted) is a lot better in terms of customization.
WHen it comes to SEO there's a lot of on-site and off-site optimization you must focus on. Saying one provider is better than the other really depends. Furthermore, if you use Blogger or WordPress.com and have a domain such as yourdomain.blogger.com or yourdomain.wordpress.com there isn't much SEO value to a subdomain such as those.
Going the self-hosted route is probably the best in terms of SEO. As mentioned before, you have more flexibility and can edit/configure your site's and files to be more "SEO friendly" rather than be restricted with what you can accomplish with Blogger and WordPress.com.
jentyree I understand your confusion when going the self-hosted route and then being told to access cPanel (control panel) to set up things. This is why Mommy Host auto-installs and sets up WordPress for our customers. We understand our customers aren't technical and don't want them to have to go through the hassle figuring things out, which is a bottleneck in getting started and ultimately leads to refunds for the web host.
unwirklich if you're still looking for a host or looking to move your site to another host don't hesitate to reach out to me and I'd be glad to give advice or help where needed.