Firefox mostly. I want multiple rendering engines to be viable. Plus it has the plug ins I want on Android and still syncs to desktop. The one problem is chromecasting to the tv from windows. I wish there was a plug in that would let me do that.
This is basically my reasons exactly. I use edge as a backup when a page doesn't work in Firefox, but use Firefox primarily because I don't want the web to be defined by blink's implementation. Plugins on Android, while limited, are unbeatable.