I know that a lot has been written about it. But I mean - your feelings about using, for example, OMF. How do they relate to VSF? Today I'm going to order the first ORF - gray dial, then I can compare it with VSF v2.5 (I bought a used one, silence update from Li from Jtime). I am also thinking of the OMF but the A9900 (chrono versions) never had. Can any of you write something about these OMFs?