Wondering if anyone has experience with both the Canon FD 50mm 1.4 and the Contax G 45mm f/2. I have a Canon FD 50mm 1.4 which is soft below f/2.8. I am thinking of selling it and getting a Contax G 45mm f/2, which I have heard is pretty sharp wide open but also about $200-$300 more on eBay. Is the Contax noticeably sharper, and worth the extra $$? Or would I be better off keeping my Canon lens and spending my money on a Panasonic 14mm f/2.8 or Metz 44 AF-1 flash. BTW, I already have a Panasonic 20mm f/1.7 and VF-2, and $300 is what I have to spend.