They both seem equally good at first glance and the underlying languages (C++/Blueprint and C#) are not the problem.
Does anybody know pros and cons of these engines when it comes to VR?
Specifically relating to VR, I have worked and made full projects in both, and I prefer Unity and would highly recommend it over Unreal for VR, but you should try both and see what feels more intuitive for you.
Unreal Engine seems more professional with advanced graphic and serious tools by default and Unity seems like an engine for indie studios who work on creating more creative games with unique styles. Of course, it's at first glance.
Thanks for the answer, I'll consider this in my decision.
Unreal's a lot heavier-weight and has processes which are probably very applicable for a larger team, but slow things down quite a lot for an individual dev.
Unity's fast and reasonably intuitive to work with, and the Asset Store ecosystem adds a lot too.
Caveat: I've not done extensive work in Unreal. I used it enough to determine it felt too heavyweight for my needs. I wrote some of my conclusions up over here, although at the time I was looking at film production rather than VR: http://www.strangecompany.org/development-notes-unreal-engin...