Backlinking (Best Results?)

When it comes to working on backlinking for my one website, what will bring the best results to get my website up in keyword rankings? Profiles, Articles, Directories, or Blog commenting? I've been working on profiles and directories recently.

web 2.0 high auth

i use web 2.0 to 10 domains. 10 domains to my money site
daily blog comments and profile to web 2.0
to get more push scrape manually high pr blog coments, not domain "pr post /2/3/4/5" to your web 2.0

QUALITY > QUANTITY. Keep that in mind