Workflow Tasks Reports Best Practice

Hello All,

I am building SharePoint 2013 web application. I want to use SharePoint workflow 2013 in this web application (Designer Or VS)

What is the best practice to get statistical information about workflow tasks ? and by statistical information I mean total completed tasks, total ongoing tasks, each user tasks .......

Previously in SP 2010 I was doing that by building visual webpart that uses CAML query to get this information from the Tasks list .... Is there a better way in 2013 ?