What's the best way of doing Reports in Zen Mojo.

Hi everyone, I have and Zen Mojo application, it's all working but I have some doubts about what is recommended to use: There is some reports of employees, for example, and actually I'm using some plugins : "Excelent export" to generate Excel reports and "jspdf" to generate PDF reports in client side.

I have an REST service, that receives the request, process and returns JSON, after client side receive the response it's processed.

- This can be slow/bad in applications with large data?

- It's better/recommended to use ZenReports even with ZenMojo applications?

- Or Zen Mojo, like any other applications based on HTML, JS and PHP can support this with any problem?

- The preparation of the JSON is very fast because the use of %DynamicObject and %DynamicArray; ZenReport can be slower than it?

Thanks,

Andrei L. Nenevê