Which site stats tool would you recommend and why?

I just installed the ‘Count per Day‘ plugin on this WordPress site. Saw it on Ton’s blog, looks kinda clean and simple, so I decided to take it for a spin.

Of course there are other options. I used to run Sitemeter on my Typepad blog quite happily. And then there is Google Analytics

Which site stats tool would you recommend for a blog like this and why?