By default Chromium still contains code, that can't be user disabled, that sends data back to Google, the only difference is that it can be stripped out and compiled at the source level (which almost no one does). https://groups.google.com/a/chromium...ss/V0x5LyOrL_0
That alone is enough to make me wary of whatever web browser Google is offering.
Did you read that? It was a bug that was reported and fixed. More than 3 years ago.
I used Firefox for many years, but recently switched to Chrome. I want to like Firefox, I really do, but at least on my machine, it feels buggy and crashy. I can't get through a youtube video without flash player crashing. Resizing the window or scrolling the window also causes flash to crash. The whole browser has quit unexpectedly more times than I care to count. With Chrome, I have not experienced any of these problems. Everything seems to "just work", and a total browser crash is very rare.
I'm on RHEL6 FYI. Google has stopped supporting RHEL6, so Chrome 27 is the last release for this OS. I'll continue to use it, as it works well for me. Also I'm a user not a developer, so maybe I'm doing something wrong, I don't know, but this is my experience with these browsers.