I would suggest stronger backlinks.

if you are commenting on sites, that's not going to get you "organic" backlinks. you want people to start linking to you naturally without you having to ask for the links.

I always recommend this: create content which draws people in, content that makes people want to talk about your site and link to your site. That in itself will help create the organic backlinks you need to compete in a competitive or non-competitive category on the search engines.