If you are looking for in depth analytics of your Lync environment, I would recommend Event Zero's suite of Dossier for Lync products. We have been using their products at Concurrency and I am just blown away by the amount of reporting that is possible within the suite. The installation is super straight forward and didn’t require any downtime. It was up and running in a matter of minutes. We are using the completely hosted model which just requires us to have agents running on each of our front end servers, SBAs and QoE/Monitoring SQL server.
Did I mention they have some FREE TOOLS as well? https://www.eventzero.com/Tools