log file analysis

I am wondering what you all are using to do log file analysis, etc. We are running into some issues with PHP in that a lot of log file analysis tools are not very 'php/cgi/dynamic content' friendly. Many of our sites run entirely thru a single 'script' with templates, etc. so the file that is requested isn't as important as what the GET query was. We also use two user tokens--one that is for the session which is passed from page to page, and another which identifies the specific user based on a cookie. Some products taht we are looking at are NetTracker from Sane, Webtrends Enterprise Suite and Enterprise Reporting Server, iLux (which looks like it doesn't support Linux), and Accrue's Hit List (which since purchased from Marketwave is apparently like 6 times as expensive). Its a shame that there aren't any 'full-featured' open source log analyzers. The closest I can find is Webalizer--which is pretty cool but still has some catch up to play before they are on the level with Web Trends, etc. I have a feeling that I am going to have use something off-the-shelf like webalizer for the 'jist' of it, and our own tools to extract specific info. Is this the way other people are approaching the problem? -k