In terms of user experience I think it is 5, but I am still missing ability of adding two accounts as it is in mobile and os clients, thus I give 4.
Edit (2024-01-18): After 1,5 year, ability to have multiple accounts was added, so I have changed to 5.

I've been using this addon for several years, and it's great.

Keeps track of all my long, unique, complicated passwords for me. Nicely functional browser extension --- convenient, but not *too* convenient (i.e. open to attack).

Juste parfait ! Que ce soit sur Android ou FF ou Chrome ! Je l'utilise tous les jours... Je ne sais pas comment je peux faire sans désormais :)

Wonderful, far better of the commercial apps!

the greatest password manager ever. much better than lastpass (yuck)! please keep up your good work, devs