Best Google Analytics Alternative

What do you think? What is the best Google Analytics alteative? StatCounter.com or any other?

I'm looking for an alteative to Google Analytics, as they have started showing (not provided) keywords for users who searched on Google and were logged in to their Google account (see my other thread here: http://forums.digitalpoint.com/showthread.php?t=2361669).

Which tool would you suggest me to use? I'm also looking for a tool that wouldn't slow down my website. WordPress ...