ImgBurn compares byte by byte of the burned disc against the image file. Since you're worried about your data, create MD5 hashes and verify them from time to time, just to be sure.
Use only quality media, such as Verbatim or Taiyo Yuden blanks. You might also want to backup your data with RAR + recovery record, or similar technique, so that you can retrieve your data even if the disc goes bad. Burning 2 (or more) discs of the same data is another option.