Im just getting to a somewhat expert level at using Realflow 5 and another damned update is released.
But its ok - its a worthy one.
RealFlow 2012 (no, Autodesk hasnt bought it) has just been released and its been further enhanced to make large scale fluid sims...well....larger! More control over particles per voxel rather than resolution dependency and even a direct to Krakatoa PRT exporter! Foam and splash has been further refined for even more detail and control.