Not one tool has all the features so right now I use a combination of WebSTAT, Google Anaytics and webanalyzer. I also parse my logs for more details on the url parameters. GA has some features that I find interesting: length of visite, depth of visite, timing, java detection.
Now if only they would display the data...
PS: I need your feedback about
http://www.webproworld.com/viewtopic.php?t=56466