I use the built in when I want the "Send to e-ink" feature, and Last Pass when I need my passwords.

aidren, LastPass is a password keeper that integrates into your browser on a laptop. But on Android, instead of working inside your browser, they provide a standalone browser. It's just your regular basic browser, but it will auto-fill (or auto-login, depending on your preferences) on any site where you have to enter a password. LastPass itself is free, but the Android version is only a part of LastPass pro, which is a small annual fee. Well worth it to me, since it provides cross-browser password keeping.

LastPass also has tools like autogenerate a secure password, so really, there are quite a few passwords of mine I don't even know. I use LastPass to generate a string of random characters for a new password, then store it. So obviously browsing password protected sites on the edge would be difficult if I couldn't access these. But of course, then you don't get the option of printing to the e-ink side as a pdf or epub. And, one minor annoyance, very often when you click on a link, you'll be asked which browser you want to open it with, built-in browser or LastPass. So it means a lot of extra clicks. But worth it to access a bunch of passwords I can't possibly commit to memory.