I have used other filter plugins before but have finally settled with WPGridbuilder.
I find it the best tool out of the available ones and I am very happy with it. Also, I got a lifetime deal (they offer it from time to time, maybe check during cyber monday again) and therefore I don’t have to pay a yearly fee anymore.
BricksExtras now even has a Facet Styler for it that makes styling the filter facets very easy.