I can give you the technical differences but the "best options" is opinion based. Basically: React Native Projects are limited in their Add-On support so depending on how big you want to scale this storybook, or use hybrid components react is your way to go. If you want a soley robust React Native program react-native is the preffered choice atleast in my opinion. The Frameworks differ as native is in app and react is using a web-based UI. The reason why some mix it in a project is just because they want to have a web-review and a mix supports you there as react alone has some wonky interactions with react-native components.