What High PR Blog Posting do you use?

Hello,

I am making buffer sites (web 2.0) for my money site and I want to have high quality backlinks to it..
Anyways what High PR Blog Posting do you use?
or any advice for quality backlinks to my buffer sites?

Thanks.. My first time trying SEO to my first website.

For tier 2, you could use any spun content blog posting services that offer decent links.