Homepage backlinks, lots of domain do choose from PR1 to PR4, DA from 25 to 40, PA from 30 to 50.
 

Limited spots.
I'm using this network to rank my clients' sites.
The number of outbound links will always be less than 20.
Your link will be on the homepage forever.
Carefree link buy because I'll take care of all the articles for you. I'll put a wikipedia link near your link to make it stronger and more relevant.

Have a look at the metrics here:
http://goo.gl/50U9Tf

And please PM me to see the domains.

Looking forward to hearing from you.