The polished sides is an interesting development as prior to this year no SS models had polished sides to my knowledge - not 3717, BP, Aquatimer. Then again last year was the one when IWC introduced 6 new models with larger cases and different finishes as evidenced by the top gun with larger ceramic case so if it were ever going to happen it would be now. IMHO, I would leave it brushed. I have seen a half dozen gens over the last couple of years and they all had brushed sides. That is one of the few details you can notice from a quick glance on the wrist.