Hi Jeffro, Kevin Stacey here..

That's an amazing milestone for AIO and as far as the debate between the two I think it's a matter of preference. AIO is simpler in nature and worry-free, but the Yoast plugin offers many more options for those who want to tinker. For effective Wordpress SEO onpage optimization, free plugins like All in One SEO Pack and WordPress SEO By Yoast are really great as they lay down the basic SEO foundation for a WordPress site, but every blog is different and nothing works best for everyone.

I always suggest looking at a side-by-side comparison of the best seo plugins for WordPress in order to make an informed decision of what the best plugin is for that blogger and their website’s specific needs.

Here’s my most recent write-up on the subject:

SEO Pressor vs Easy WP SEO vs Scribe SEO
http://www.bestseopluginforwordpress.com/wordpress-seo/the-best-seo-plugin-for-wordpress/

Check it out and let me know what you think.

Great article btw…I’ll be referencing this post on my main blog.