I have Adblock Plus, which is the main one I really use (though it's disabled on some sites because it won't let me view without having it disabled) these days. I have another that lets me save images as PNGs because for some reason, when I go to save some images, it'll try to save them as another file by default and won't give me the option to just save them as a PNG, so it really just gets used on an as needed basis.
I used to use a Quick Tab extension to help find tabs on occasions when I have too many open and can't just click on them at the top of the browser, but I found out Chrome built one into the browser, so I no longer have a need for it and just disabled it.
I've used the same extension for quite some time. It's proved to be really effective. My only criticism of all ad blockers is I wish they worked in reverse. I'd much prefer to choose what I block rather than have to choose what to unblock.