Which addon will be helpful in getting effective reports?

[NehaNagori]

I am using JIRA6.1. We want a report that provide a high level view.

eg. if we click on epic, it will expand with its and details. Also there should be details like original estimate vs Time spent both userwise and task wise.

[AnnWorley]

Here are a couple of add-ons that may provide that functionality. I suggest doing Free Trials of each to see which best suits your use case:

All-In-One Reports for JIRA

eazyBI Reports and Charts for JIRA