I already use Advanced Mode, but uBO makes no distinction between blocking scripts and cookies, XHR requests, and Media elements. uMatrix does make this distinction, so I'm led to believe uBO doesn't block them at all. That's necessary for me.

I have used them both for a very long time but I'm trying to get away from uMatrix because, even though I love the fidelity of control it gives me, it seems to be utterly broken since Firefox Quantum and will not load any frames, unless it is completely disabled from the Add-ons page.

I've been patient for months but it still isn't fixed, thus I'm trying to shed my dependence of it if uBO can offer me the same thing on its own.