only the canon original could be good, but cost a lot and is hard to find a used one.
probably is better if you sell your fd lenses or continue to use your FD camera with your fd lenses...
there are some good FD lenses, but with the adapter are not so good.
I've tryed a lot of years ago an fd 20 2.8, 85 L and 300L on a 10d and it's better to buy a new canon 20 2.8, 85 1.8 and a 70/200 4