I use Lockwise, and the thing that drove me towards it is that it works on Linux and iOS without having to run a sync service (Dropbox/...) on my laptop. The sync is excellent and just works. The iOS app could use some work, though. It doesn't support adding or editing passwords (but Firefox for iOS does, and it's planned for Lockwise according to the issue tracker), and it's REALLY slow to start (several seconds) when using it to fill a password in the browser. I don't know what's up with that, but it's annoying.
