Are There Any Good 'Statistics' Websites?

For information such as up-to-date percentages of surfers using specific browsers, resolutions, operating systems, how long people spend online, their ISP and other internet related stuff?

Id love to find a source for all this type of data instead of having to use Google or Yahoo multiple times to cross reference individual documents.

Do any of you folks know of a reliable source to find this type of information that is updated on somewhat of a regular basis?

Regards,

Lee