I have loads of MP3s which were ripped with cdex by a friend. Wherever there was a defect on the disc, the audio just cuts out, there's also loads of stutters in the sound on them.
Second vote for EAC, just don't use burst mode, thats as poor as any other ripper. Install the accurate rip plugin and you can compare your CRCs with other people to know if you have a good rip or not.