Birt vs jasper - birt inside web app

JigarShah

I know this is not really right place but i am really confused on which one to use for our application. I have never used reporting tool earlier. We have following important requirements

- Performance - 5 second per report.

- Its a JEE application.

- We have Web tier and enterprise tier separate. So birt viewer will be in web tier, We will have to write connector to communicate with enterprise tier. (or do we have any other way to do this?)

- Designs, templates, dataset are customizable via web UI. Although not as flexible as Eclipse BIRT designer but somewhat similar.

- We will store template and designs somewhere. (in DB and / or file system)

I have checked birt API. looks good and there is lot of documentation available. My biggest concern is size of application and performance. Does jasper have any advantage over BIRT ? Jasper is old and i read somewhere it uses internally vfs like something. Not sure if it can improve performance ?

- We are using struts2 for we app. can some one guide me about how to deploy birt with struts2 ? I found example with struts 1.0 example here. But its difficult to port it to struts2.

I really need some urgent help on this. Thanks a lot in advance..!!