what amd processors are better then the fx 6200

Your closest bet is the fx 8320/8350 for something that can perform close to the i7 4770k. But even that difference is still favored toward the i7.

Save your money and upgrade to an intel platform would be my suggestion. If you really want to upgrade, safest upgrade without knowing your motherboard would be the fx 6300 which can stil allow some overclocking.