Chrome sends user-info (all visited pages) to Google. It's spying on YOU!
Some guys even say that Chrome may just have been created getting other developers (ff, ie, etc.) implement some features, which Chrome has/will have, into their own explorers. Such features may even erase all traces of activities which Google is actually laying, while "spying" on you whilst you use their service. This second point may be a little hypothetical but sounds somehow trustworthy, for the near future at least.
My choice: Anything but Chrome.