I started out using Unity, but after being constantly blown away by UE4 features and previews, I decided to try it out last year, and since then I haven’t used Unity once- such an intuitive and powerful set of tools, I don’t see myself using anything else for the foreseeable future! As with anything there is a learning curve, but it is very much worth it, and if you are familiar with concepts common to game development, you’ll find yourself right at home!