Recently bought a GS-1 outfit to replace an SQ-A outfit I lost in a fire and got to try it only over the last couple of months. I had been a little concerned that the rotating back of the RB would have better suited me but after use I really do like the GS-1. I REALLY like the optics, it handles easily and on a fairly long shoot with the GS-1, rapid winder and a big-assed handle-mount flash I found it fine. As for the bellows of the RB, one of my lenses is the 110mm macro - it's great. I really am well pleased with this outfit. (Of course people of my age are easily pleased
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Bob H