Like some of the lower starred reviews, I also had problems importing from LastPass. It is a problem, but I'm pointing the finger at LastPass and their export formatting.

Bitwarden is a first class extension for Firefox. It makes me happy in so many ways. (They actually have a desktop version for Linux machines. So good.) It's open source, secure and not attached to a ginormous company that buys out smaller companies to obtain additional customers. They earn their customers by making a good product. Also, the devs are responsive and reasonable both here and at Github. Keep up the good work and I'll keep recommending you to my friends and customers!