I think managing your devices sync yourself is an upside, since you can establish yourself to where you sync and how. But it is more complicated to set up as a downside.
Having to sync passwords manually sounds like a hassle.
With 1Password all my credentials are on all my devices, always up to date. It integrates with the password management APIs on iOS so I can create an account on a computer and log in using this same service's app on my phone seconds later and the password will already be there, I just have to stare at the device for a second and I'm logged in.
It's all incredibly seamless and I can't imagine having to go back to managing passwords manually.
With 1Password all my credentials are on all my devices, always up to date. It integrates with the password management APIs on iOS so I can create an account on a computer and log in using this same service's app on my phone seconds later and the password will already be there, I just have to stare at the device for a second and I'm logged in.
It's all incredibly seamless and I can't imagine having to go back to managing passwords manually.