Except Chrome updates in the background, so I never have to wait for it. Firefox's updates are bad because they get in the way, which Chrome's don't.
The only way Firefox is better in my experience is in adding search engines, which the Mycroft project does an awesome job of. At times I've opened Firefox, added the search engine I wanted, then switched to Chrome and used the import tool to bring it over. Basically everything else is better in Chrome.