This is answered many times. If you have a look at the Clone CD website -
www.elby.ch - and look at the list of supported writers, you will see a few writers which have two sheep in the EFM column. These are good writers for copying Safedisk 2 etc. You will also want it to be able to read/write subchannel data, RAW mode.
Good writers include Lite-on's and LGs