[jypepin]

yeah you are right about the cost of migrating, I've been through one and it's indeed to be avoided.

I badly used "bigger". What I meant was more in the lines of React is great to build what we could call web apps - something with complex logic, etc. While jQuery is better for simple DOM manipulation.

Maybe a good line is, as soon as you find yourself manipulating data you might want to think about using a framework such as React.