For any website we would recommend a blend of both blogger and editorial backlinks. This is because editorial links will generally have higher authority than blogger links, however with blogger links we can control the anchor text (to a degree), at least much more than with editorial placements.
This means that your site would get high-authority links from huge websites via editorial outreach, and usually the anchors and branded and pointing to the homepage of your site. Great, this is a natural and logical way to build authority. Then, as your authority grows, you can utilise blogger outreach to vary the anchor text or vary the URLs which receive links, spreading authority and keyword density from external domains across your site.
To what degree you need a blend of both completely depends on your current website authority, and where you sit within the wider ecosystem of your competitors for your target keywords. We're really open about what it's going to take and what link building strategies will work, so if you want to ask us about the best approach for your link building strategy then we'd be happy to jump on a call or send over an email analysis about where you should start, and why.