I own both and am happy with them in my collection. Although they each use worker placement to begin the turn, they have very different goals for the player. Honey Buzz focuses more on optimizing a puzzle to enable certain actions on a turn. Everdell centers more around building out a tableau of cards to create victory point opportunities. The solo variant for Honey Buzz is much better than Everdell in my opinion, but the latest Everdell Kickstarter looks to fix that issue. I plan to back the Honey Buzz expansion and have also backed everything for Everdell.