Just use Google Analytics. I've been using it for years, and it's always very accurate. There are some other paid ones out there that update stats by the hour, but it's really not worth it IMO.
I managed Plesk unix and wintendo servers myself and there were 2 stat systems installed. You could assign one of them to each domain and AWstats was one of them.
google analytics, unfurtunely it seems doesnt work for me.. i have used it some monthes ago but it just stoped to work on November... its not a big problem also
Websitestatschecker.com is a fully featured website which collects information about any domain within a seconds.
I think you can check Google Analytics for the absolute information. There are many other paid services available online.
I prefer Statscounter.com. They have a good range of information and in depth too. Paid membership gets you some benefits...
Google Analytics is the most comprehensive but Statcounter is great for checking live stats, but not so great for deep analysis.