I assume because they are separate pages, they have their own backlinks and page rank. I think the non-www version is the one showing up on Google rankings. On Webmaster Tools, it is showing more backlinks as well. However, on Moz OSE the www version is showing more backlinks.
Should I keep both as they are? Or is it better to use just one (and 301 redirect the other one)? Which version is better to keep (for SEO purposes)?
Will using 301 redirect transfer all my link juice and backlinks to the chosen website version? Or will I lose them by doing so?