Referrers

A question: I am trying to keep a track of the top referrers to my site so I can keep an updated "top referrers" section. However from 4 different sources I get 4 very different answers. From using Cpanel (Webaliser) I get a set of results that doesn't ring entirely true against what I expect; when I use Sitemeter (I know, not the best) it has very different answers; when I look at the Truefresco referrers it's similar to Sitemeter with a couple of discrepencies; and when I use my old fashioned Spidey-sense there seem to be ommissions or ranks that are way out of kilter.

So the question is does anyone know of a decent way to track top referrers? Is there a better way of doing it through Cpanel? Or is it all guesswork, all the time?