Web Analytics Software - Recommendations

Hello, 

Any recommendations out there (from experience and/or in-depth knowledge) of any Web Analytics software for internally hosted sites for a Large Enterprise? 

 Anything with Centralized Management would be great.  

 We have external sites, internal sites for production, intranet sites, etc.  

 Running Windows 2008R2 with IIS 7.5 - Multiple IIS servers.  

 I have a lot of reading to do (http://en.wikipedia.org/wiki/List_of_web_analytics_software), but wanted to get some experiences/input to make my research a bit easier. :)  

Thanks!