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The following link will also give you valuable insight www.g2crowd.com/categories/business-intelligence

You can find a recent list of the best BI tools at the following link
www.softwareadvice.com/bi/
It lists down the est tools for 2015, however it does not include the tools you mentioned. You can check these out as well

Yes, I agree. Its difficult to tell what's best, without exactly understanding your requirement.

FYI- To my understanding some of the major players in the field are IBM Cognos, SAP, and Oracle.

Well, its difficult for anyone to possibly tell you what is the best without knowing your situation, your system, your users, your needs?

First let me know what kind of work you are into?

I am checking out a good business intelligence tool and managed to list down the following;
1.Tableau
2. Qlik View
3. Spotfire
4. Birst

Can anyone tell me what's the best BI tool to use if you have experience on these?