I purchased a 38mm (SS) 16 months ago and after a while wished I had got the 42mm version. I have now bought an S2 42mm (SS) and noticed the performance difference with OS3 on both watches is negligible. The screen on the 42mm s2 is far far superior - seems more "retina" than the 38. Is this a feature of 42 in general or S2 brighter screen? i am wondering to return the s2 42mm and buy a used s0 42mm at a really discounted rate. the cost to change to a 42mm s2 is around £450 where as more like £100 for 42mm used s0. Anyone else thinking the same? thoughts?