Well burners are s cheap now get a 7260 and a LiteOn or whatever that burns CD's well and you should have all your bases covered plus you can test disks with most of the LiteOn drives.
If all you want to do is mainly DVD's the Optiarc drives are great. I haven't really worried about how the few CD's I burn turn out as long a they pass the verify afterwords and play I'm happy anymore, but I do have 7 burners in here