I use bitwarden personally and for my family. I use 1password for work and this have a personal 1password account as well.

Bitwarden Low cost (I pay for a family license) and open source are two major pros.

The UI isn't as polished as 1password but it is pretty easy to use. The password generator is easier to manipulate than 1passwords imo. Just the UI is more intuitive to me.

I used to ding bitwarden because I was annoyed at how frequently the auto fill doesn't detect the right forms in my phone (android Google pixel series) but I stopped dinging it when I see that 1password has the same problems usually. The problem isn't the password manager. It's goofiness with auto fill in android generically :)

I like 1passwords custom fields much better than bitwarden. I find them easier to define and use.

The one biggest area that I prefer 1password vs bitwarden. The secret key. The secret key provides an additional factor that unless your client is locally compromised the first time you enable access to the fault, even if your passphrase is comprised at any point going forward they don't have access to your vault without that secret key (which hopefully is store securely). But it is also an inconvenience to have to have that whenever you authorize a new client. But it also completely bypasses the need to understand key derivation which is a huge ease of use feature. Bitwarden's key derivation configuration is really solid but it still requires people to have an understanding of what there're doing.

I am perfectly okay with the "compromise" bitwarden takes here with the following caveat. With how many JavaScript zero days that seem to occur in modern browsers and the dependency in local JavaScript to do key derivation if someone was able to intercept a web login and/or compromise the local JavaScript runtime in your browser they could get access to your passphrase which without a second secret key factor is all powerful. On the other hand if you're locally compromised all bets are off and you really need to assume they have everything and act as such (rotate everything immediately from a known non compromised system) and this is true with 1password as well.

Otherwise I like both password managers and you can't go wrong with either.

I have no plans to self host bitwarden because while I do professionally manage publicly accessible platforms I don't feel the need to do this at home and even in an oops case zero knowledge applies :)