[fshen]

I am downloading IntelliJ. I've use Eclipse for years, It works for me.

I will give Eclipse a try.

[trung_pham]

IntelliJ is the best IDE out there. It might be pricy, but it will save you so much time in the long run. Since time is money, you will end up saving money too. :)

[Mr_T_]

The Community Edition is free of cost. The choice depends on what you need: http://www.jetbrains.com/idea/features/editions_comparison_m...

[thebluesky]

yeah free version supports Java SE, with a really nice Scala plugin for download via the plugin manager.