"Sydney has old school creasing problems at the shoulders even with basic posing." I don;t think so.

http://www.contentparadise.com/forums/contentparadise/index.php?showtopic=2665&st=20&p=19415&

There's some camparisons in this thread and a few others. However maybe not exactly what you are looking for as I am not sure what "old school creases" are. 
Sydneys Shoulders are every bit as good if not better. Try a combination of the ABC's, and the dials, and don't pose with the translate tool. Use the rotation tool in Poser to pose any figure, you'll get much better results.