I havent had one underbuffer error since Ive ####ted using my Plextor 12x10x32 CDRW. I have copied lots of games, with several different CD protections, using in combinations: Plextors Copy utilities, Adaptec EZ cd creator utilities and Disk Juggler, different programs have there plus's and minus's, butr overall I believe with these programs you can copy anything. And with the ability to copy full 700 meg CD's in under 8 minutes, makes it alot easier then my first CDRW ( Fast and Friendly, 4x2x8...
) Now those were the days..
Anyways, I would strongly suggest to anyone to purchase a Plextor drive, they go easily under 300$
and are pretty awesome with what they do.. hope this helps you and others out a little before deciding on what drive to buy.