I have used adblock and adblock Plus but this is the real deal when they use the Ultimate in the title it is no lie. Really blocks popup windows and ads hell anything to do with what you weren't interested in gets blocked. Don't know how they do it but they do. The only think that bothers me is websites that continually ask to turn off or whitelist. I am on a site for a reason I get it how ads run a page but for me to risk it all the time to turn off adblock just to enjoy my site its pretty frustrating because I can't block the ads. The adblock team Ultimate team needs to have a work around that policy where sure even if turn off some blockin will still exist just for like inappropriate, explicit material. Hell overall its just what I needed and it doesn't affect Browser performance actually it makes it better because pages no longer stalls or load slow to popup those ads.