It depends on the condition of the cd, whether it is copy protected or not, if copy protected whether EAC can extract all the audio tracks, whether the original cd already has cd-text and whether you want cd-text anyway.
Essentially, you should only use ccd if-
a) the cd is in very good condition and either has cd-text already or you don’t want to include cd-text on the copy; or
b) the cd is copy protected and you are unable to rip all the audio tracks with eac (happens sometimes).
If the cd is in poor condition, you should rip with EAC (or other ripper of your choice) and re-master (with or without cd-text).
[Note: If the cd is in good condition there is no need to set audio to best (slowest) in ccd. The audio quality will be the same irrespective of the setting. It’s only if the cd is in poor condition that that setting will make any difference but if it’s in poor condition, you should, if possible, rip and re-master in any event.]