If Microsoft integrates all the functionality of the original Edge into Chromium Edge, then it will be a great browser to use on their Surface line of tablet computers. Without those features, it’s a non-Google Chrome with a large company backing its feature updates and contributing to the codebase’s continued improvement, along with syncing features and potential better integration with Windows. Firefox has a lot of good features still, but its small usage amount has made some development budgets ignore it or drop support of it on some sites I have visited.