Well thanks all for contributing to this thread and showing off your excellent renders. At the end of the day my "personal" opinion based on what I've seen is that Sydney really isn't as realistic as V4. (Remember at the start of this thread I was looking for realism and versatility). Maybe its the lack of realistic textures or P7's lighting (or maybe its my definition of what realisc means!).
 but from what I've seen V4 is far more capable These are the problems I see with Sydney
1/ not enough realistic textures
2/faces all look basically the same
3/Too many angular facets on her face giving her an almost in-game graphics quality

Maybe Sydney would be more versatile in the face room but I've yet to see any examples of that. 

i think for now I'll stick to the Daz figure and judging by the number of negative threads on P7, I think I'll also stick with Poser 6. 
Of course feel free to contradict and post me some killer Sydney images ;-)

Thanks again for taking the time to contribute to this thread and please keep it going. I'm going to unsubscribe from it now but will definately check back from time to time.