WOW! I just watched that entire video, I want that sound!
If RailPro doesn't get that kind of sound soon, I may have to go with DCC again just to get that Loksound prime mover sound and those features!
I'm not at the stage I'll be buying a control system yet, but I do have 5 locomotives now, all DCC ready, as soon as I get some track laid, I'll want to start running some trains, and hearing that kind of sound!