I have used Norton products for decades, including personal and business use, and trust this company completely with my online security. In addition to using their password extension, I also use Norton Internet Security and Norton Core (both fine products).

Regarding Norton Identity Safe, it's not perfect and has some quirks, but I still prefer this password manager over the other password apps, and I've tried most of them. Of the 40 websites that I logon, only two fail to auto-fill. This is fairly typical of most of the other password managers. Norton was one of the first vendors to publish their extension compatible with Firefox Quantum; about half of the major password managers are not even listed in the Firefox extensions - not a very good sign to me. I want an extension reviewed and blessed by Mozilla.

I also use Norton Identity Save on my iPad. It syncs well, but I do wish the Norton app would support split screen for IOS 11.

I do have some complaints as follows:
Norton Services is sometimes down, causing the extension not to function. Last week, the service was down twice - for a few hours each time. Surely Norton can improve on this! I also noticed that the "My Vault" option on the pull-down menu will stop working at some point, usually after I've completed a few logons.

Quirks aside, company reputation, trust, and security mean everything to me - especially when a third party is maintaining your sensitive data in the cloud. Norton has that reputation for me.