What is the best Stats Software?

[MyDigitalpoint]

Before going ahead, this is not a thread to discuss Google Analytics or Cpanel Awstats because the question is about a software that one can install and control directly instead of using third-party providers.

Personally I don't care how accurate is an external service but to control on my own each and every aspect of my website so, anyone knows what is the best software to track several domains from a single location?

Many years back I tried BB clone, the so called PHP Web counter on steroids, but I never found those steroids and being this a flat-file database script is rather hard to setup.

Any suggestion I can look at to run my own stats?