I have a chance to pick up a nice late model MC version (serial number over 1 million) and I'm wondering if it's worth it. I'm on the fence as I quite like my Hexanon 50/1.4 and so far I haven't been overly impressed with OM lenses on my NEX 7. I did like them on the 5n and Fuji however. I had originally been looking at after OM 50/1.8's thinking that it and my 24/2.8 would make a nice small travel kit. The 50/1.4 however is a not that much bigger and while not as sharp as the later 50/1.8's I like the bit faster speed.