I used DBeaver (community edition) before Datagrip and I would have to give the nod to datagrip overall. I wouldn't have even tried it if I did not have the etbrains all product pack. DBeaver is great, don't get me wrong, but Datagrip just seems a lot more polished overall and the settings and the UI just seem more intuitive to me.

More streamlined UI. I find the graph viewer to display some things nicer, like coloring tables, bringing in related tables. Slightly better introspection and code formatting. Easier refactoring capabilities. Easier to get IdeaVim working then whatever Ecplise plugin is needed in DBeaver.

In my experience, DataGrip has been easier to get up and running out of the box and bringing the big IDE guns than DBeaver but DBeaver also does done this really well. For example I have never been able to setup DG with Access but DBeaver works pretty good out of the box with that garbage. Also it's free.

Both are solid