Chrome feels way slower than Firefox and the only reason keeping me from making the jump to Firefox is laziness. I'm too lazy to find alternatives for all my extensions, move bookmarks, history, passwords etc, but Firefox feels way faster.
Minus the extensions, migrating everything else should be easily accomplished via importing and should only be a few clicks in a wizard.[0]
[0] https://support.mozilla.org/en-US/kb/import-bookmarks-google...
Then you start moving your stuff, you install extensions and while fighting with your habits from old browser ux you collect history, cookies and all that stuff.
Then some time passes and you're looking back at your old browser, now with cleaned profile, so shiny and fast :)