There’s not much I can say about Kadence that I haven’t already said about Blocksy. There are a lot of similarities between the two themes. They both have a free and pro version of their themes. Kadence has also released Kadence Blocks, which will help you build websites easily with their block builder, with no code required. Kadence Conversions will enable you to create pop-ups and banners, etc., though it isn’t free, so I’d only consider it if you plan to purchase the Full Bundle package from Kadence.

If you’re settled on choosing this type of theme, I’d take a look at the features and site templates that Blocksy and Kadence have to offer and choose your favourite theme of the two.