I'm actually using Chrome over FF on my 64-bit laptop at the moment, because FF has been miserably buggy for months and I can't seem to fix it. Chrome is nice and quick, although some sites still don't support it.
At the same time, I have completely deleted any Google features other than Gmail & YouTube from my Google account, and I never sign in at any of these places unless checking Gmail or YT, so that they can't have my soul.