Adblock Plus just wasn’t working very well for me, some ads were making their way through the filter. (Possibly because of their so-called white-list that lets “good” ads through. uBlock promises to be lighter on computer resources, and I have no reason to disbelieve it. I never even notice that it’s there, (except in the rare instance when it “breaks” something on a site I visit, and I have to temporarily disable it.)