I am a five year consisent user of Intellij, and more than that here and there (was too slow prior to a few years ago).
Finally.. IJ12 just screams. Loaded scala project (spark..) in a few seconds. It was taking ij11 like a good 10 to 20x longer - and then messed it up (see my prior post).
Kudos and thanks to the IJ team.