What do you want?
Personally I like The7 for our work website, as the v2 release gives me what I want regarding post sliders and photo galleries, without needing additional plugins and, in my opinion, it's gorgeous.
I think The X theme and Avada are some of the ugliest themes out of the box, though with Avada in particular you can style it how you want in the Wordpress backend - The X theme is far too spaced out for me, and though I want to keep trying it, I always pull myself away. I guess I could fix most of it in CSS, I'll pass, thanks.