I personally don't know how extensive the iTune error correction system is. EAC has an "Accurip" feature that compares your rip against a database and gives you a "confidence" reading for the quality of your rip.
However, over the years I've not had too much problem ripping disks. As noted before, I do most of mine on a Linux system, but I have done ripping on a variety of other systems over the years and never been displeased with results when the CD is in good condition. I use a music server with a Squeezebox and an external Lavry DA10 DAC. It handles my collection in a way that allows me to enjoy the music without constantly obsessing over things.
However, over the years I've not had too much problem ripping disks. As noted before, I do most of mine on a Linux system, but I have done ripping on a variety of other systems over the years and never been displeased with results when the CD is in good condition. I use a music server with a Squeezebox and an external Lavry DA10 DAC. It handles my collection in a way that allows me to enjoy the music without constantly obsessing over things.