I refuse to install Chrome (AKA Google Botnet) since it's a massive security hole and records everything you type into the URL bar.
Aren't all browser recording what you type to make it easier to find later?
I can understand Chrome being a privacy problem being closed-source and configured to send back information to Google by default but I'm not sure how it is a security problem and why Chromium would be a problem at all given that you can check for yourself that it doesn't have any back-door or send data back to Google (which isn't possible with Opera unless you disassemble it).
Anyway, Opera is switching to WebKit (already used by Safari and all Chromium derivatives) so you may just opt to wait.