I am a big fan of Intellij. But the single most feature I hate about their products is keyboard shortcuts. If they follow standard unix shortcuts along with standard browser shortcuts, it will be more productive.
Also - I would either use their cloud sync and/or VCS to back-up your customizations. It sucks switching to a new computer and losing a day re-configuring your IDE back to baseline =|
[1] https://stackoverflow.com/questions/37776684/which-intellij-...
Looks like they may have gone off the deep-end with the configuration files - I remember the ability to export to a MUCH smaller file but this was probably 4 years ago at this point.
Control+Alt+L for code lint & format makes a heck of a lot more sense than the two separate Control+K Control+J or whatever that Visual Studio demands. Same for optimize imports - Control+Alt+O(ptimize) instead of Control+K Control+I or whatever in VS.
I haven't used Eclipse in ages, but I remember those shortcuts being bad enough that I never bothered to learn them.
Switch to file by name? IntelliJ: Control+E + type name + enter. VS: Control+semicolon (??) + type name + enter (if you're lucky, or you might have to go double click it in the project pane).
Of course, this is all a matter of preference, and the bindings can be changed. Although if you prefer the "chorded" shortcuts of VS, I don't know if IntelliJ supports that :)