I have tried my hardest to get the best secondhand optics and last night discovered that the 35 2.8, 50 1.4 and 100 2.8 that I have are all single coated. None of them have MC on front, none have silver noses and these three mentioned Do Not reflect green colour in front element (is it safe to say that they are single coated?). I am learning very quickly that all is not what it seems with Zuiko! So I have just purchased an MC 35 f2 from Henrys, Toronto off e.bay. I hope to upgrade the 100mm 2.8 to either 90mm f2 macro or 100 f2 as these two optics are always multi-coated and both have ED glass. Am I going to win the race? Or am I better to go to Nikon now and know that the AF24 f2.8, AF35 f2, AF85 f1.4, 300 AFS f4 are going to be sharp, contrasty, flare resistant and most of all have that warm nice- to-look-at Nikon character? Any advice about which optic is best performer out of 100mm f2 Zuiko and 90mm f2 Zuiko for general photography (not macro) is much appreciated!