I've only used Firefox for a very long time, but the @zenbrowser looks great. Should I give it a try?

@hongminhee @zenbrowser It's main selling points are vertical tabs (less features than Firefox's Tree Style Tabs extension, but a little more stable) and window splitting (unusably buggy the last time I tried it, but that was a few months ago).

I don't think it offers much beyond Firefox with Tree Style Tabs to make it worth switching.