Heavy Metal Jesus Heavy Metal, Thunder Strikin’ Jesus!

Question; I signed up

Question; I signed up with Sitemeter.com yesterday, and fixed the counter so it would show my previous visiters to. And now when I checked it and compared it with Extreme Tracking, which is the one I've used before, I found a differense in about 5-8 visits. Now what's that all about?! Which one is the best one? I chose Sitemeter cuz I've seen several bloggers use it, and it seemed like a good tool (multipel trackings, counter, the works). But is it? I want the most accurate one. Not that I have that much to keep track of, but none the less, I want just that. Do you know which one is the best?
Maybe I should just be harsh and delete one of'em? That way I don't have this trouble...hehe