@Dustbak, in other words you would not need the software than.
I must say I'm overwhelmed with responses with compliments to Leaf who are really answering my questions faster than I can ask them
Sinar looks great but I also shoot alot of stuff on location and I need preview window and those backs are at the moment out of my budget. I would opt for the Emotion 75LV and that one is app 10.000 euros more expensive than the Aptus deal I have on the table now.
I first have to make the start within my budget and after a year or so I will maybe upgrade when the dust has settled.
The fight for me is between the P25 and the Aptus 22.
I have now read some reviews and those two are almost identical, I THINK the ISO25 of the Aptus will give me the greenlight for that back, I would love to use that on my daytime ringflash work, a gorgeous DOF should be possible with that.
I must say I'm surprised at the help I get from all of you and the manufactorers, it really strengthens my faith. Thank you.