[StevePerkins]

File -> Settings -> Editor -> "Allow placement of caret after end of line". Uncheck.

I'm not exactly a zealot for any particular tool, and I used Eclipse for almost a decade. However, after trying even the community edition of IntelliJ for a few weeks... I would feel like the guy in "Flowers for Algernon" if I ever had to go back.

The community edition is actually open-source (Apache license). I ended up buying an ultimate edition license recently because of the Chronon debugger, but you don't NEED anything beyond the community edition unless you want deep IDE integration with Spring, JEE, or some other supported framework. Frankly, I'm not really using any paid features beyond Chronon...

[latchkey]

I'm in a similar boat. Used Eclipse forever. Even tried IntelliJ for a bit years ago and hated it. Tried it again recently after Eclipse crashed and trashed its workspace. Now I can't see ever going back to anything else.

The killer feature for me oddly enough is: fuzzy search for a file

[Meai]

I can't stand the overcrowded popups in intellij (e.g: intellisense popups), there's just too much going on, all kinds of icons and extra info that is unnecessary. I have been able to customize away everything I dislike in intellij except for that.

[latchkey]

Have you submitted an enhancement report asking for a design improvement? I've submitted several to them and gotten all sorts of great responses from them. If you don't give them feedback through the appropriate channels, then you aren't going to get improvement.