****I have the FDn 100-300 zoom, the new type, and it's a very good lens but I haven't used it for a long time, the only FD zoom lenses I know that are reputed to be a poor performers are the FD 100-200 and the FD SSC 100-300.***

You forgot the cheap kit lens 35-70mm and 70-210 f4 FDNs and the common FDn 200mm f4 is just average (well my copy is).