I just wanted to add that I originally came from WaW as well. However, the advantages of the winSPx CD versions (map editor and resolution) brought me to buy those two as well.
In the beginning, I really missed the opfire confirmation. Especially against human opponents, it seemed exploitable to move units around in order to draw opfire chances before beginning the 'real' movement.
If you have the CD version, the opfire filter then works like a charm. You can specify which target to engange, in what area, against how strong armour, at what range, ...
I didn't miss opfire confirmations after that, and neither will you.
