My partner and I have recently begun working on a few very large SEO projects, and I am searching for private article/blog networks similar to BMR to use to submit original spun content. We have 2 writers and a spinner dedicated to each project, so running out of content will not be an issue (we have at least 8 full-time writers and 4 fulltime spinners onboard at any given time). We are looking for a network that comes with high PR and can produce a large number of referring domains. We would like to find a network(s) which have very high standards regarding the content they accept on their site, and the less subscribers, the better. I am not really looking for Link Vine or some of the more commonly used networks. Can anyone give me some suggestions?