miketolsa ,
You can take my word for that as 
Zebbi wrote above. Cocoon gives better performance, faster build'n'test possibilities, flow of UX is very smooth and your app is going to be 20 mb lighter than Crosswalk-build. There are just three things to note:
1. Cocoon does not support "Letterbox Scale" full screen mode, so you got to think about that
2. Cocoon does not support Web Fonts, so you either got to stick with standard fonts (ugly) or use Sprite Fonts. Not a big deal, but can be a pain in the ass if you need to change the color of the text or already used fonts in your build.
3. Cocoon puts a lot of permission requirements on the app, depending on the services and plugins you are using, Zebbi can share his experience with that. The more permissions you ask from your users, the less likely they will install your app.
Proof can be found in my signature, and If you need any help, please let me know.
Happy Building!