Joe...EAC (Exact Audio Copy) is supposed to be the most accurate bit-for-bit ripper out there but it is a bit cumbersome to set up and use. I ripped a few CDs a year ago to send to E (Emille) at AA and it took me an hour or so looking for setup guides to walk me through the process and then it took about 40 mins per CD to rip in FLAC format. Here's a link:
Exact Audio Copy
Sounds like dbpoweramp is a bit more user friendly but no idea about bit accuracy ripping. It has an accurate rip feature but that supposedly compares the results to a database of what other folks have ripped whereas EAC assures an accurate rip by doing multiple reads on the disc I believe and has been shown to be the most accurate ripper. I am a novice at this still spinning the silver discs so you will probably get a lot better advice from the digital mavens here.