Sydney has old school creasing problems at the shoulders even with basic posing.  V4 is tremendously smoother in the mesh.  Not a looks thing, a function thing.  V4 with the basic morph pack is also extremely customizable compared to Sydney (at least out of the box, and I'm not really interested in spending money on a figure already left on the floor by the much superior V4 imho)

edit: 'ere I'll post a comparison of the two in the same pose in a couple of minutes.

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